Edit Profile (opens in new tab) O’Regan, Donal Compute Distance To: Compute Author ID: oregan.donal Published as: O’Regan, Donal; O’Regan, D.; O’regan, Donal; O’Regan, Donald; O’Regan, Dónal; O’regan, D.; O’Regan, Daniel J. more...less Further Spellings: О’Реган Донал Homepage: http://www.maths.nuigalway.ie/staff/doregan.shtml External Links: Google Scholar · Math-Net.Ru · dblp · GND Documents Indexed: 1,498 Publications since 1986, including 29 Books 10 Contributions as Editor Reviewing Activity: 38 Reviews Co-Authors: 415 Co-Authors with 1,250 Joint Publications 10,581 Co-Co-Authors all top 5 Co-Authors 247 single-authored 644 Agarwal, Ravi P. 51 Jiang, Daqing 51 Wang, Jinrong 46 Khristova, Snezhana G. 39 Grace, Said Rezk 29 Lu, Haishen 28 Wong, Patricia J. Y. 26 Saker, Samir H. 26 Xu, Jiafa 25 Papageorgiou, Nikolaos S. 25 Yan, Baoqiang 23 Meehan, Maria 23 Nguyen Huy Tuan 22 Lupulescu, Vasile 22 Staněk, Svatoslav 21 Lakshmikantham, Vangipuram 19 El-Gebeily, Mohamed A. 19 Hernández, Eduardo M. 19 Shahzad, Naseer 17 Frigon, Marlène 17 Precup, Radu 16 Huang, Nan-Jing 16 Saadati, Reza 16 Wang, Chao 15 Balaj, Mircea 15 Buşe, Constantin 14 Chen, Yuqing 14 Guo, Chengjun 14 Ntouyas, Sotiris K. 13 Cho, Yeol Je 13 Chu, Jifeng 13 Xu, Xian 12 Amini-Harandi, Alireza 12 Franco Leis, Daniel 12 Zu, Li 11 Farajzadeh, Ali P. 11 Filippakis, Michael E. 10 Băleanu, Dumitru I. 10 Ben Amar, Afif 10 Bohner, Martin J. 10 Bonanno, Gabriele 10 Nieto Roig, Juan Jose 10 Perera, Kanishka 10 Samet, Bessem 9 Dshalalow, Jewgeni H. 9 Fečkan, Michal 9 Ibrahim, Ahmed Gamal 9 Moussaoui, Toufik 9 Taoudi, Mohamed Aziz 8 Bobisud, Larry E. 8 Górniewicz, Lech 8 Jleli, Mohamed Boussairi 8 Karapınar, Erdal 8 Li, Xiaodi 8 Liu, Yansheng 8 Nourouzi, Kourosh 8 Saierli, Olivia 7 Banaś, Józef 7 Can, Nguyen Huu 7 Henderson, Johnny Lee 7 Mustafa, Octavian G. 7 Ngoc, Tran Bao 7 Orpel, Aleksandra 7 Osman, Mahmoud M. 7 Xu, Yuantong 7 Zhang, Keyu 6 Avery, Richard I. 6 Chen, Jinhai 6 Fu, Zhengqing 6 Kyritsi, Sophia Th. 6 Li, Mengmeng 6 Ma, Ruyun 6 Perán, Juan 6 Pierri, Michelle 6 Xia, Yonghui 6 Xu, Xiaojie 6 Yuan, Chengjun 6 Zhou, Yong 5 Aghajani, Asadollah 5 Au, Vo Van 5 Heidarkhani, Shapour 5 Kelevedjiev, Petio S. 5 Luc, Nguyen Hoang 5 Petruşel, Adrian 5 Rahman, Ghaus Ur 5 Sahu, Daya Ram 5 Shakhmurov, Veli B. 5 Thach, Tran Ngoc 5 Wang, Fulong 5 Yang, Zhilin 4 Arshad, Sadia 4 Dhage, Bapurao C. 4 Dong, Wei 4 Hung, Nguyen Van 4 Kim, Jong Kyu 4 Kopanov, Peter 4 Leela, Srinivasa G. 4 Li, Xuesong 4 Liu, Kui 4 Ngo Van Hoa ...and 319 more Co-Authors all top 5 Serials 64 Applicable Analysis 56 Journal of Mathematical Analysis and Applications 48 Dynamic Systems and Applications 47 Applied Mathematics Letters 44 Applied Mathematics and Computation 32 Nonlinear Analysis. Theory, Methods & Applications. Series A: Theory and Methods 32 Advances in Difference Equations 31 Computers & Mathematics with Applications 27 Mathematical and Computer Modelling 27 Dynamics of Continuous, Discrete & Impulsive Systems. Series A. Mathematical Analysis 26 Fixed Point Theory 23 Proceedings of the American Mathematical Society 22 Communications in Applied Analysis 21 Nonlinear Analysis. Theory, Methods & Applications 20 Journal of Computational and Applied Mathematics 18 Electronic Journal of Differential Equations (EJDE) 18 Nonlinear Analysis Forum 18 Journal of Nonlinear and Convex Analysis 18 Fixed Point Theory and Applications 17 Journal of Inequalities and Applications 17 Nonlinear Functional Analysis and Applications 15 Topological Methods in Nonlinear Analysis 14 Mathematical Methods in the Applied Sciences 14 Mathematical Inequalities & Applications 13 Zeitschrift für Analysis und ihre Anwendungen 13 Journal of Applied Mathematics and Stochastic Analysis 13 Memoirs on Differential Equations and Mathematical Physics 12 Bulletin of the Australian Mathematical Society 12 Acta Applicandae Mathematicae 12 Filomat 12 Journal of Applied Mathematics and Computing 12 Journal of Fixed Point Theory and Applications 11 Journal of Differential Equations 11 Mathematische Nachrichten 11 Georgian Mathematical Journal 11 Positivity 11 Communications in Nonlinear Science and Numerical Simulation 11 Boundary Value Problems 10 Rocky Mountain Journal of Mathematics 10 Journal of Integral Equations and Applications 10 Aequationes Mathematicae 10 Cubo 10 Differential Equations and Applications 9 Fuzzy Sets and Systems 9 Glasgow Mathematical Journal 9 Journal of Difference Equations and Applications 9 Nonlinear Studies 9 Nonlinear Analysis. Real World Applications 8 Annales Polonici Mathematici 8 Proceedings of the Edinburgh Mathematical Society. Series II 8 Bulletin of the Iranian Mathematical Society 8 Fractional Calculus & Applied Analysis 8 Nonlinear Analysis. Modelling and Control 8 Journal of Nonlinear Science and Applications 7 Archivum Mathematicum 7 Proceedings of the Royal Irish Academy. Section A, Mathematical and Physical Sciences 7 Abstract and Applied Analysis 7 Electronic Journal of Qualitative Theory of Differential Equations 7 Mathematical Proceedings of the Royal Irish Academy 6 Journal of the Franklin Institute 6 Czechoslovak Mathematical Journal 6 Journal of Optimization Theory and Applications 6 Monatshefte für Mathematik 6 Numerical Functional Analysis and Optimization 6 Rendiconti del Circolo Matemàtico di Palermo. Serie II 6 Bulletin of the Korean Mathematical Society 6 Panamerican Mathematical Journal 6 Analele Științifice ale Universității “Ovidius” Constanța. Seria: Matematică 6 Functional Differential Equations 6 Differential Equations and Dynamical Systems 6 Acta Mathematica Sinica. English Series 5 IMA Journal of Applied Mathematics 5 Archiv der Mathematik 5 Mathematica Slovaca 5 Utilitas Mathematica 5 Topology and its Applications 5 Annales Societatis Mathematicae Polonae. Seria I. Commentationes Mathematicae 5 Acta Mathematica Hungarica 5 Applications of Mathematics 5 Proceedings of the Royal Society of Edinburgh. Section A. Mathematics 5 Bulletin of the Malaysian Mathematical Sciences Society. Second Series 5 Evolution Equations and Control Theory 5 Journal of Function Spaces 4 Chaos, Solitons and Fractals 4 Demonstratio Mathematica 4 Indian Journal of Mathematics 4 Results in Mathematics 4 Stochastic Analysis and Applications 4 Bulletin des Sciences Mathématiques 4 Communications on Applied Nonlinear Analysis 4 Mathematical Problems in Engineering 4 Journal of Applied Analysis 4 Taiwanese Journal of Mathematics 4 Neliniĭni Kolyvannya 4 Analysis (München) 4 Differential Equations 4 Journal of Applied Mathematics 4 Revista de la Real Academia de Ciencias Exactas, Físicas y Naturales. Serie A: Matemáticas. RACSAM 3 ZAMP. Zeitschrift für angewandte Mathematik und Physik 3 Commentationes Mathematicae Universitatis Carolinae ...and 156 more Serials all top 5 Fields 743 Ordinary differential equations (34-XX) 566 Operator theory (47-XX) 204 General topology (54-XX) 156 Integral equations (45-XX) 133 Partial differential equations (35-XX) 105 Difference and functional equations (39-XX) 100 Real functions (26-XX) 58 Calculus of variations and optimal control; optimization (49-XX) 53 Global analysis, analysis on manifolds (58-XX) 46 Systems theory; control (93-XX) 40 Functional analysis (46-XX) 40 Algebraic topology (55-XX) 37 Biology and other natural sciences (92-XX) 36 Probability theory and stochastic processes (60-XX) 22 Numerical analysis (65-XX) 18 Dynamical systems and ergodic theory (37-XX) 12 General and overarching topics; collections (00-XX) 10 Operations research, mathematical programming (90-XX) 9 Abstract harmonic analysis (43-XX) 8 Functions of a complex variable (30-XX) 8 Approximations and expansions (41-XX) 8 Mechanics of deformable solids (74-XX) 8 Fluid mechanics (76-XX) 8 Game theory, economics, finance, and other social and behavioral sciences (91-XX) 6 Special functions (33-XX) 6 Harmonic analysis on Euclidean spaces (42-XX) 5 Linear and multilinear algebra; matrix theory (15-XX) 3 Measure and integration (28-XX) 3 Sequences, series, summability (40-XX) 3 Computer science (68-XX) 2 Potential theory (31-XX) 2 Integral transforms, operational calculus (44-XX) 2 Quantum theory (81-XX) 2 Information and communication theory, circuits (94-XX) 1 Mathematical logic and foundations (03-XX) 1 Convex and discrete geometry (52-XX) 1 Differential geometry (53-XX) 1 Manifolds and cell complexes (57-XX) 1 Statistics (62-XX) Publications by Year all cited Publications top 5 cited Publications Citations contained in zbMATH Open 1,096 Publications have been cited 11,672 times in 7,385 Documents Cited by ▼ Year ▼ Variational approach to impulsive differential equations. Zbl 1167.34318Nieto, Juan J.; O’Regan, Donal 286 2009 Dynamic equations on time scales: A survey. Zbl 1020.39008Agarwal, Ravi; Bohner, Martin; O’Regan, Donal; Peterson, Allan 252 2002 Generalized contractions in partially ordered metric spaces. Zbl 1140.47042Agarwal, Ravi P.; El-Gebeily, M. A.; O’Regan, Donal 247 2008 Iterative construction of fixed points of nearly asymptotically nonexpansive mappings. Zbl 1134.47047Agarwal, R. P.; O’Regan, Donal; Sahu, D. R. 196 2007 Fixed point theorems for generalized contractions in ordered metric spaces. Zbl 1142.47033O’Regan, Donal; Petruşel, Adrian 181 2008 On a new class of abstract impulsive differential equations. Zbl 1266.34101Hernández, Eduardo; O’Regan, Donal 158 2013 Positive solutions for Dirichlet problems of singular nonlinear fractional differential equations. Zbl 1206.34009Agarwal, Ravi P.; O’Regan, Donal; Staněk, Svatoslav 149 2010 Fixed point theory and applications. Zbl 0960.54027Agarwal, Ravi P.; Meehan, Maria; O’Regan, Donal 141 2001 Fixed point theory for Lipschitzian-type mappings with applications. Zbl 1176.47037Agarwal, Ravi P.; O’Regan, Donal; Sahu, D. R. 135 2009 Multiple positive solutions of singular and nonsingular discrete problems via variational methods. Zbl 1070.39005Agarwal, Ravi P.; Perera, Kanishka; O’Regan, Donal 129 2004 Oscillation theory for second order linear, half-linear, superlinear and sublinear dynamic equations. Zbl 1073.34002Agarwal, Ravi P.; Grace, Said R.; O’Regan, Donal 112 2002 On recent developments in the theory of abstract differential equations with fractional derivatives. Zbl 1229.34004Hernández, Eduardo; O’Regan, Donal; Balachandran, Krishnan 111 2010 Positive solutions to certain classes of singular nonlinear second order boundary value problems. Zbl 0808.34022O’Regan, D. 107 1994 Multiple positive solutions of singular discrete \(p\)-Laplacian problems via variational methods. Zbl 1098.39001Agarwal, Ravi P.; Perera, Kanishka; O’Regan, Donal 107 2005 Existence of solutions for semi-linear abstract differential equations with not instantaneous impulses. Zbl 1293.34019Pierri, Michelle; O’Regan, Donal; Rolnik, Vanessa 106 2013 Oscillation theory for difference and functional differential equations. Zbl 0954.34002Agarwal, Ravi P.; Grace, Said R.; O’Regan, Donal 101 2000 Infinite interval problems for differential, difference and integral equations. Zbl 0988.34002Agarwal, Ravi P.; O’Regan, Donal 84 2001 Nonlinear boundary value problems on time scales. Zbl 0995.34016Agarwal, Ravi P.; O’Regan, Donal 83 2001 Oscillation criteria for second-order nonlinear neutral delay dynamic equations. Zbl 1062.34068Agarwal, Ravi P.; O’Regan, Donal; Saker, S. H. 81 2004 Some general existence principles and results for \((\varphi(y'))=qf(t,y,y'),0<t<1\). Zbl 0778.34013O’Regan, Donal 79 1993 Discrete oscillation theory. Zbl 1084.39001Agarwal, Ravi P.; Bohner, Martin; Grace, Said R.; O’Regan, Donal 79 2005 Multiple nonnegative solutions for second order impulsive differential equations. Zbl 1047.34008Agarwal, Ravi P.; O’Regan, Donal 77 2000 Existence theory for nonlinear ordinary differential equations. Zbl 1077.34505O’Regan, Donal 76 1997 Eigenvalues and the one-dimensional \(p\)-Laplacian. Zbl 1002.34019Agarwal, Ravi P.; Lü, Haishen; O’Regan, Donal 75 2002 Solvability of some fourth (and higher) order singular boundary value problems. Zbl 0795.34018O’Regan, Donal 74 1991 Nonlinear superlinear singular and nonsingular second order boundary value problems. Zbl 0902.34015Agarwal, Ravi P.; O’Regan, Donal 74 1998 Positive solutions of differential, difference and integral equations. Zbl 1157.34301Agarwal, Ravi P.; O’Regan, Donal; Wong, Patricia J. Y. 71 1999 Anti-periodic solutions for fully nonlinear first-order differential equations. Zbl 1142.34313Chen, Yuqing; Nieto, Juan J.; O’Regan, Donal 70 2007 The extinction and persistence of the stochastic SIS epidemic model with vaccination. Zbl 1395.92180Zhao, Yanan; Jiang, Daqing; O’Regan, Donal 61 2013 Singular boundary value problems for first and second order impulsive differential equations. Zbl 1073.34025Agarwal, Ravi P.; Franco, Daniel; O’Regan, Donal 60 2005 Analysis of autonomous Lotka-Volterra competition systems with random perturbation. Zbl 1258.34099Jiang, Daqing; Ji, Chunyan; Li, Xiaoyue; O’Regan, Donal 60 2012 Existence principles for nonlinear resonant operator and integral equations. Zbl 0932.45010Meehan, M.; O’Regan, D. 60 1998 Nonlinear Urysohn discrete equations on the infinite interval: a fixed-point approach. Zbl 1003.39017Agarwal, R. P.; O’Regan, D. 60 2001 Oscillation criteria for certain \(n\)th order differential equations with deviating arguments. Zbl 0997.34060Agarwal, Ravi P.; Grace, Said R.; O’Regan, Donal 57 2001 Singular boundary value problems for superlinear second order ordinary and delay differential equations. Zbl 0863.34022Agarwal, Ravi P.; O’Regan, Donal 56 1996 Morse theoretic aspects of \(p\)-Laplacian type operators. Zbl 1192.58007Perera, Kanishka; Agarwal, Ravi P.; O’Regan, Donal 55 2010 Positive solutions for mixed problems of singular fractional differential equations. Zbl 1232.26005Agarwal, Ravi P.; O’Regan, Donal; Staněk, Svatoslav 53 2012 Solvability of some nonlinear boundary value problems. Zbl 0653.34015Bobisud, L. E.; O’Regan, D.; Royalty, W. D. 52 1988 Fractional boundary value problems with singularities in space variables. Zbl 1268.34023O’Regan, Donal; Staněk, Svatoslav 52 2013 Oscillation of second-order strongly superlinear and strongly sublinear dynamic equations. Zbl 1221.34083Grace, Said R.; Agarwal, Ravi P.; Bohner, Martin; O’Regan, Donal 49 2009 Existence theory for single and multiple solutions to singular positone boundary value problems. Zbl 0999.34018Agarwal, Ravi P.; O’Regan, Donal 48 2001 Multiplicity results for singular conjugate, focal, and \((N,P)\) problems. Zbl 0978.34018Agarwal, Ravi P.; O’Regan, Donal 47 2001 Fixed-point theory for the sum of two operators. Zbl 0858.34049O’Regan, D. 46 1996 Fuzzy fractional integral equations under compactness type condition. Zbl 1312.45009Agarwal, Ravi; Arshad, Sadia; O’Regan, Donal; Lupulescu, Vasile 46 2012 A survey of Lyapunov functions, stability and impulsive Caputo fractional differential equations. Zbl 1343.34006Agarwal, Ravi; Hristova, Snezhana; O’Regan, Donal 44 2016 A multiplicity result for second order impulsive differential equations via the Leggett Williams fixed point theorem. Zbl 1070.34042Agarwal, Ravi P.; O’Regan, Donal 43 2005 Boundary value problems for discrete equations. Zbl 0890.39001Agarwal, R. P.; O’Regan, D. 43 1997 Initial and boundary value problems for fuzzy differential equations. Zbl 1048.34015O’Regan, Donal; Lakshmikantham, V.; Nieto, Juan J. 42 2003 The oscillation of certain higher-order functional differential equations. Zbl 1070.34083Agarwal, R. P.; Grace, S. R.; O’Regan, D. 41 2003 Stability of Caputo fractional differential equations by Lyapunov functions. Zbl 1374.34005Agarwal, Ravi; O’Regan, Donal; Hristova, Snezhana 40 2015 Twin solutions to singular Dirichlet problems. Zbl 0946.34022Agarwal, Ravi P.; O’Regan, Donal 40 1999 Nonlinear contraction theorems in probabilistic spaces. Zbl 1135.54315O’Regan, Donal; Saadati, Reza 40 2008 Multiple positive solutions to superlinear periodic boundary value problems with repulsive singular forces. Zbl 1042.34047Jiang, Daqing; Chu, Jifeng; O’Regan, Donal; Agarwal, Ravi P. 40 2003 Strong convergence theorems for relatively nonexpansive mappings in Banach spaces with applications. Zbl 1201.65091Li, Xi; Huang, Nan-Jing; O’Regan, Donal 38 2010 Singular Dirichlet boundary value problems. I: Superlinear and nonresonant case. Zbl 0884.34028O’Regan, Donal 38 1997 Fixed point theorems for singlevalued and multivalued generalized contractions in metric spaces endowed with a graph. Zbl 1227.54053Nicolae, Adriana; O’Regan, Donal; Petruşel, Adrian 38 2011 Differential mixed variational inequalities in finite dimensional spaces. Zbl 1186.49006Li, Xue-Song; Huang, Nan-Jing; O’Regan, Donal 38 2010 Impulsive differential equations with variable times. Zbl 0863.34015Frigon, Marlène; O’Regan, Donal 37 1996 Lyapunov-type inequalities for a class of fractional differential equations. Zbl 1338.34023O’Regan, Donal; Samet, Bessem 37 2015 Existence of solutions for first order ordinary differential equations with nonlinear boundary conditions. Zbl 1058.34015Franco, Daniel; Nieto, Juan J.; O’Regan, Donal 37 2004 Oscillation theory for second order dynamic equations. Zbl 1043.34032Agarwal, Ravi P.; Grace, Said R.; O’Regan, Donal 37 2003 Global exponential stabilization of impulsive neural networks with unbounded continuously distributed delays. Zbl 1316.34079Li, Xiaodi; O’Regan, Donal; Akca, Haydar 36 2015 Unbounded solutions for singular boundary value problems on the semi-infinite interval: upper and lower solutions and multiplicity. Zbl 1116.34016Yan, Baoqiang; O’Regan, Donal; Agarwal, Ravi P. 36 2006 Fixed-point theory for weakly sequentially continuous mappings. Zbl 1185.34026O’Regan, D. 36 1998 On existence and local attractivity of solutions of a quadratic Volterra integral equation of fractional order. Zbl 1147.45003Banaś, Józef; O’Regan, Donal 36 2008 Fourth-order problems with nonlinear boundary conditions. Zbl 1068.34013Franco, Daniel; O’Regan, Donal; Perán, Juan 35 2005 Periodic solution for a non-autonomous Lotka-Volterra predator-prey model with random perturbation. Zbl 1326.34091Zu, Li; Jiang, Daqing; O’Regan, Donal; Ge, Bin 35 2015 A fixed-point approach for nonlinear discrete boundary value problems. Zbl 0933.39004Agarwal, R. P.; O’Regan, D. 35 1998 A note on existence of nonnegative solutions to singular semi-positone problems. Zbl 0921.34027Agarwal, Ravi P.; O’Regan, Donal 35 1999 Controllability of Volterra-Fredholm type systems in Banach spaces. Zbl 1160.93005Hernández M., Eduardo; O’Regan, Donal 34 2009 Anti-periodic boundary value problem for nonlinear first order ordinary differential equations. Zbl 1097.34015Franco, Daniel; Nieto, Juan J.; O’Regan, Donal 34 2003 Positive solutions for \((p,n-p)\) conjugate boundary value problems. Zbl 0920.34027Agarwal, Ravi P.; O’Regan, Donal 34 1998 First order impulsive initial and periodic problems with variable moments. Zbl 0930.34016Frigon, M.; O’Regan, D. 34 1999 New oscillation criteria for second-order neutral functional dynamic equations via the generalized Riccati substitution. Zbl 1221.34245Saker, S. H.; O’Regan, Donal 34 2011 On abstract differential equations with non-instantaneous impulses. Zbl 1360.34131Hernández, Eduardo; Pierri, Michelle; O’Regan, Donal 33 2015 Integral inclusions of upper semi-continuous or lower semi-continuous type. Zbl 0860.45007O’Regan, Donal 32 1996 Multiple positive solutions for the one-dimensional singular \(p\)-Laplacian. Zbl 1048.34047Lü, Haishen; O’Regan, Donal; Zhong, Chengkui 31 2002 Fixed point theorems for set-valued maps and existence principles for integral inclusions. Zbl 0956.47026O’Regan, Donal; Precup, Radu 31 2000 Triple solutions to boundary value problems on time scales. Zbl 0958.34021Agarwal, R. P.; O’Regan, D. 31 2000 Multiplicity results using bifurcation techniques for a class of boundary value problems of impulsive differential equations. Zbl 1221.34072Liu, Yansheng; O’Regan, Donal 31 2011 Multiple positive solutions to systems of nonlinear semipositone fractional differential equations with coupled boundary conditions. Zbl 1340.34041Yuan, Chengjun; Jiang, Daqing; O’Regan, D.; Agarwal, Ravi 30 2012 A coupled system of boundary value problems. Zbl 0919.34022Agarwal, Ravi P.; O’Regan, Donal 30 1998 Nodal solutions for second-order \(m\)-point boundary value problems with nonlinearities across several eigenvalues. Zbl 1101.34006Ma, Ruyun; O’Regan, Donal 30 2006 Existence theory for nonlinear integral and integrodifferential equations. Zbl 0905.45003O’Regan, Donal; Meehan, Maria 30 1998 Stochastically asymptotically stability of the multi-group SEIR and SIR models with random perturbation. Zbl 1243.92047Yuan, Chengjun; Jiang, Daqing; O’Regan, Donal; Agarwal, Ravi P. 30 2012 Existence results for nonlinear integral equations. Zbl 0851.45003O’Regan, Donal 29 1995 Boundary value problems on infinite intervals and semiconductor devices. Zbl 0594.34019Granas, A.; Guenther, R. B.; Lee, J. W.; O’Regan, D. 29 1986 Existence and asymptotic stability of solutions of a perturbed fractional functional-integral equation with linear modification of the argument. Zbl 1220.45011Darwish, Mohamed Abdalla; Henderson, Johnny; O’Regan, Donal 29 2011 Oscillation of second-order damped dynamic equations on time scales. Zbl 1128.34022Saker, Samir H.; Agarwal, Ravi P.; O’Regan, Donal 29 2007 Existence theorems for the one-dimensional singular \(p\)-Laplacian equation with sign changing nonlinearities. Zbl 1031.34023Agarwal, Ravi P.; Lü, Haishen; O’Regan, Donal 29 2003 \(p\)th moment exponential stability of impulsive stochastic functional differential equations and application to control problems of NNs. Zbl 1395.93566Li, Xiaodi; Zhu, Quanxin; O’Regan, Donal 29 2014 Extremal solutions for nonlinear fractional boundary value problems with \(p\)-Laplacian. Zbl 1323.34004Ding, Youzheng; Wei, Zhongli; Xu, Jiafa; O’Regan, Donal 28 2015 Oscillation results for second-order nonlinear neutral delay dynamic equations on time scales. Zbl 1128.34042Saker, Samir H.; Agarwal, Ravi P.; O’Regan, Donal 28 2007 A stacking theorem approach for fuzzy differential equations. Zbl 1042.34027Agarwal, Ravi P.; O’Regan, Donal; Lakshmikantham, V. 28 2003 Existence results for differential delay equations. I. Zbl 0782.34070Lee, John W.; O’Regan, Donal 27 1993 Existence theory for nonlinear Fredholm and Volterra integral equations on half-open intervals. Zbl 0920.45006Meehan, Maria; O’Regan, Donal 27 1999 Singular boundary value problems. Zbl 0584.34012Bobisud, L. E.; O’Regan, D.; Royalty, W. D. 26 1986 Topological transversality: applications to third order boundary value problems. Zbl 0628.34017O’Regan, Daniel J. 26 1987 Weak solutions of ordinary differential equations in Banach spaces. Zbl 0933.34068O’Regan, D. 26 1999 Nodal solutions for \(m\)-point boundary value problems using bifurcation methods. Zbl 1141.34009Sun, Jingxian; Xu, Xian; O’Regan, Donal 26 2008 Commutativity of quaternion-matrix-valued functions and quaternion matrix dynamic equations on time scales. Zbl 1472.34164Li, Zhien; Wang, Chao; Agarwal, Ravi P.; O’Regan, Donal 3 2021 Self-improving properties of discrete Muckenhoupt weights. Zbl 07394043Saker, Samir H.; O’Regan, Donal; Agarwal, Ravi P. 2 2021 Some basic properties and fundamental relations for discrete Muckenhoupt and Gehring classes. Zbl 1485.40007Saker, S. H.; Rabie, S. S.; Alzabut, Jehad; O’Regan, D.; Agarwal, R. P. 2 2021 Existence and uniqueness results for modeling jet flow of the antarctic circumpolar current. Zbl 1460.76912Wang, JinRong; Fečkan, Michal; Wen, Qian; O’Regan, Donal 1 2021 Maps with weakly sequentially closed graphs satisfying compactness conditions on countable sets. Zbl 1479.47053O’Regan, Donal 1 2021 A strong convergence theorem for a finite family of Bregman demimetric mappings in a Banach space under a new shrinking projection method. Zbl 07420409Orouji, Bijan; Soori, Ebrahim; O’Regan, Donal; Agarwal, Ravi P. 1 2021 Best approximation of \(\kappa \)-random operator inequalities in matrix MB-algebras. Zbl 07464992Madadi, Masoumeh; O’Regan, Donal; Rassias, Themistocles M.; Saadati, Reza 1 2021 Existence conditions for solutions of bilevel vector equilibrium problems with application to traffic network problems with equilibrium constraints. Zbl 1481.47076Nguyen Van Hung; Tri, Vo Viet; O’Regan, Donal 1 2021 A new derivative concept for set-valued and fuzzy-valued functions. Differential and integral calculus in quasilinear metric spaces. Zbl 1464.26030Lupulescu, Vasile; O’Regan, Donal 1 2021 Hardy-type operators with general kernels and characterizations of dynamic weighted inequalities. Zbl 1473.26032Saker, S. H.; Osman, M. M.; O’Regan, D.; Agarwal, R. P. 1 2021 Regularization of a multidimensional diffusion equation with conformable time derivative and discrete data. Zbl 1470.35415Tuan, Nguyen Huy; Thach, Tran Ngoc; Can, Nguyen Huu; O’Regan, Donal 1 2021 Characterizations of reverse dynamic weighted Hardy-type inequalities with kernels on time scales. Zbl 1458.26067Saker, S. H.; Osman, M. M.; O’Regan, D.; Agarwal, R. P. 1 2021 Controllability of stochastic nonlinear oscillating delay systems driven by the Rosenblatt distribution. Zbl 1462.34104Sathiyaraj, T.; Wang, JinRong; O’Regan, D. 1 2021 Hyers-Ulam stability and existence of solutions for fractional differential equations with Mittag-Leffler kernel. Zbl 1434.34014Liu, Kui; Wang, JinRong; Zhou, Yong; O’Regan, Donal 9 2020 Hyers-Ulam stability for equations with differences and differential equations with time-dependent and periodic coefficients. Zbl 1469.39009Buşe, Constantin; Lupulescu, Vasile; O’Regan, Donal 9 2020 Final value problem for nonlinear time fractional reaction-diffusion equation with discrete data. Zbl 1436.35327Tuan, Nguyen Huy; Baleanu, Dumitru; Thach, Tran Ngoc; O’Regan, Donal; Can, Nguyen Huu 8 2020 Positive solutions for a system of Hadamard-type fractional differential equations with semipositone nonlinearities. Zbl 1432.34010Ding, Youzheng; Jiang, Jiqiang; O’Regan, Donal; Xu, Jiafa 6 2020 Convergence analysis of solution sets for fuzzy optimization problems. Zbl 07163150Hung, Nguyen Van; Tam, Vo Minh; Tuan, Nguyen Huy; O’Regan, Donal 5 2020 On well-posedness of the sub-diffusion equation with conformable derivative model. Zbl 1450.35276Nguyen Huy Tuan; Tran Bao Ngoc; Baleanu, Dumitru; O’Regan, Donal 5 2020 On the solutions of first-order linear impulsive fuzzy differential equations. Zbl 1464.34012Liu, Rui; Wang, JinRong; O’Regan, Donal 4 2020 A new class of generalized multiobjective games in bounded rationality with fuzzy mappings: structural \((\lambda, \varepsilon)\)-stability and \((\lambda, \varepsilon)\)-robustness to \(\varepsilon\)-equilibria. Zbl 1458.91054Hung, Nguyen Van; Tam, Vo Minh; O’Regan, Donal; Cho, Yeol Je 4 2020 Theory of translation closedness for time scales. With applications in translation functions and dynamic equations. Zbl 1435.34004Wang, Chao; Agarwal, Ravi P.; O’Regan, Donal; Sakthivel, Rathinasamy 4 2020 Ulam type stability of first-order linear impulsive fuzzy differential equations. Zbl 1464.34013Liu, Rui; Wang, JinRong; O’Regan, Donal 3 2020 Regularized gap functions and error bounds for generalized mixed weak vector quasivariational inequality problems in fuzzy environments. Zbl 1464.49006Hung, Nguyen Van; Tam, Vo Minh; Nguyen, Tuan; O’Regan, Donal 3 2020 Exact solutions of linear Riemann-Liouville fractional differential equations with impulses. Zbl 1448.34008Agarwal, Ravi P.; Hristova, Snezhana; O’Regan, Donal 3 2020 Bilevel equilibrium problems with lower and upper bounds in locally convex Hausdorff topological vector spaces. Zbl 1427.90249Hung, Nguyen Van; O’Regan, Donal 3 2020 A new class of \((\omega,c)\)-periodic non-instantaneous impulsive differential equations. Zbl 1452.34027Liu, Kui; Wang, JinRong; O’Regan, Donal; Fečkan, Michal 3 2020 Analysis of a stochastic Holling type II predator-prey model under regime switching. Zbl 1441.34058Jiang, Xiaobo; Zu, Li; Jiang, Daqing; O’Regan, Donal 2 2020 Approximate solution of the backward problem for Kirchhoff’s model of parabolic type with discrete random noise. Zbl 1451.65135Triet, Nguyen Anh; Phuong, Nguyen Duc; O’Regan, Donal; Tuan, Nguyen Huy 2 2020 Finite approximate controllability of Hilfer fractional semilinear differential equations. Zbl 1474.93022Wang, JinRong; Ibrahim, A. G.; O’Regan, Donal 2 2020 Existence and uniqueness and first order approximation of solutions to atmospheric Ekman flows. Zbl 1453.34027Fečkan, Michal; Guan, Yi; O’Regan, Donal; Wang, JinRong 2 2020 Existence and Ulam type stability for nonlinear Riemann-Liouville fractional differential equations with constant delay. Zbl 1474.34533Agarwal, Ravi P.; Hristova, Snezhana; O’Regan, Donal 1 2020 Well-posedness results for a class of semilinear time-fractional diffusion equations. Zbl 1462.35435de Andrade, Bruno; Van Au, Vo; O’Regan, Donal; Tuan, Nguyen Huy 1 2020 Coincidence results for compositions of multivalued maps based on countable compactness principles. Zbl 1460.54051O’Regan, Donal 1 2020 On existence and regularity of a terminal value problem for the time fractional diffusion equation. Zbl 1469.35233Tuan, Nguyen Huy; Ngoc, Tran Bao; Zhou, Yong; O’Regan, Donal 1 2020 Coincidence theory for multivalued maps satisfying compactness conditions on countable sets. Zbl 1432.54016O’Regan, Donal 1 2020 Periodicity of non-homogeneous trajectories for non-instantaneous impulsive heat equations. Zbl 1430.34021Yang, Peng; Wang, Jinrong; O’Regan, Donal 1 2020 Robustness for linear evolution equations with non-instantaneous impulsive effects. Zbl 1436.34058Wang, JinRong; Li, Mengmeng; O’Regan, Donal; Fečkan, Michal 1 2020 On a terminal value problem for pseudoparabolic equations involving Riemann-Liouville fractional derivatives. Zbl 1442.35235Ngoc, Tran Bao; Zhou, Yong; O’Regan, Donal; Tuan, Nguyen Huy 1 2020 Harnack type inequalities and multiple solutions in cones of nonlinear problems. Zbl 1444.47065Herlea, Diana-Raluca; O’Regan, Donal; Precup, Radu 1 2020 Approximation of mild solutions of a semilinear fractional differential equation with random noise. Zbl 1443.35176Tuan, Nguyen Huy; Nane, Erkan; O’regan, Donal; Phuong, Nguyen Duc 1 2020 Positive almost periodic solution for a noninstantaneous impulsive Lasota-Wazewska model. Zbl 1451.34104Li, Mengmeng; Wang, JinRong; O’Regan, Donal 1 2020 Existence and Ulam stability of solutions for conformable impulsive differential equations. Zbl 1458.34028Qiu, Wanzheng; Wang, JinRong; O’Regan, Donal 1 2020 \(C^\ast\)-algebra valued fuzzy normed spaces with application of Hyers-Ulam stability of a random integral equation. Zbl 1485.45013Chaharpashlou, R.; O’Regan, Donal; Park, Choonkil; Saadati, Reza 1 2020 Ulam-Hyers-Mittag-Leffler stability for \(\psi\)-Hilfer fractional-order delay differential equations. Zbl 1458.34128Liu, Kui; Wang, JinRong; O’Regan, Donal 19 2019 Existence and Ulam’s stability for conformable fractional differential equations with constant coefficients. Zbl 1422.34047Li, Mengmeng; Wang, JinRong; O’Regan, D. 15 2019 Relative controllability of delay differential systems with impulses and linear parts defined by permutable matrices. Zbl 1410.34235You, Zhongli; Wang, Jinrong; O’Regan, Donal; Zhou, Yong 11 2019 Calculus of fuzzy vector-valued functions and almost periodic fuzzy vector-valued functions on time scales. Zbl 1423.26059Wang, Chao; Agarwal, Ravi P.; O’Regan, Donal 10 2019 Iterative learning control for differential inclusions of parabolic type with noninstantaneous impulses. Zbl 1428.93052Liu, Shengda; Wang, JinRong; Shen, Dong; O’Regan, Donal 8 2019 A higher integrability theorem from a reverse weighted inequality. Zbl 1441.26010Saker, Samir; O’Regan, Donal; Agarwal, Ravi 7 2019 Fixed point theory for countably weakly condensing maps and multimaps in non-separable Banach spaces. Zbl 07008100Ben Amar, Afif; Derbel, Saoussen; O’Regan, Donal; Xiang, Tian 6 2019 Nonemptyness and compactness of the solution set for fractional evolution inclusions with non-instantaneous impulses. Zbl 1411.34022Wang, Jinrong; Ibrahim, Ahmed G.; O’Regan, Donal 6 2019 Levinson type inequalities and their extensions via convexity on time scales. (Levinson type inequalitis and their extensions via convexity on time scales.) Zbl 1409.26016Saker, S. H.; Osman, M. M.; O’Regan, D.; Agarwal, R. P. 6 2019 Hyers-Ulam stability for linear differences with time dependent and periodic coefficients. Zbl 1425.39015Buşe, Constantin; O’Regan, Donal; Saierli, Olivia 6 2019 Positive solutions for a system of nonlinear Hadamard fractional differential equations involving coupled integral boundary conditions. Zbl 07459232Jiang, Jiqiang; O’Regan, Donal; Xu, Jiafa; Fu, Zhengqing 5 2019 Nontrivial solutions for a higher order nonlinear fractional boundary value problem involving Riemann-Liouville fractional derivatives. Zbl 1425.34031Zhang, Keyu; O’Regan, Donal; Xu, Jiafa; Fu, Zhengqing 5 2019 Asymptotical consensus of fractional-order multi-agent systems with current and delay states. Zbl 1430.34072Wang, Xuhui; Li, Xuesong; Huang, Nanjing; O’Regan, D. 5 2019 A new method to prove the nonuniform dichotomy spectrum theorem in \(\mathbb{R}^n\). Zbl 1432.34074Xia, Yonghui; Bai, Yuzhen; O’Regan, Donal 4 2019 Hyers-Ulam stability for linear differences with time dependent and periodic coefficients: the case when the monodromy matrix has simple eigenvalues. Zbl 1423.34070Buşe, Constantin; O’Regan, Donal; Saierli, Olivia 4 2019 On the approximate controllability for Hilfer fractional evolution hemivariational inequalities. Zbl 1412.34193Wang, JinRong; Liu, Xianghu; O’Regan, D. 4 2019 Periodic solution for a stochastic non-autonomous predator-prey model with Holling II functional response. Zbl 1440.35351Zu, Li; Jiang, Daqing; O’Regan, Donal 4 2019 Exponential stability and relative controllability of nonsingular delay systems. Zbl 1416.93173You, Zhongli; Wang, JinRong; O’Regan, D. 4 2019 Controllability of Hilfer fractional noninstantaneous impulsive semilinear differential inclusions with nonlocal conditions. Zbl 1439.34015Wang, JinRong; Ibrahim, Gamal; O’Regan, Donal 4 2019 Asymptotically periodic behavior of solutions of fractional evolution equations of order \(1<\alpha <2\). Zbl 07093133Ren, Lulu; Wang, Jinrong; O’Regan, Donal 3 2019 Global attracting solutions to hilfer fractional differential inclusions of Sobolev type with noninstantaneous impulses and nonlocal conditions. Zbl 07114670Wang, Jinrong; Ibrahim, Ahmed Gamal; O’Regan, Donal 3 2019 Lyapunov-type inequalities for coupled systems of nonlinear fractional differential equations via a fixed point approach. Zbl 1453.26015Jleli, Mohamed; O’Regan, Donal; Samet, Bessem 3 2019 Basic concepts of Riemann-Liouville fractional differential equations with non-instantaneous impulses. Zbl 1425.34003Agarwal, Ravi; Hristova, Snezhana; O’Regan, Donal 3 2019 Abstract Leray-Schauder type alternatives and extensions. Zbl 1436.54037O’Regan, Donal 2 2019 Mittag-Leffler stability for non-instantaneous impulsive Caputo fractional differential equations with delays. Zbl 07093132Agarwal, Ravi; Hristova, Snezhana; O’Regan, Donal 2 2019 A fixed point theorem in uniform spaces generated by a family of \(b\)-pseudometrics. Zbl 07143032Faraji, Hamid; Nourouzi, Kourosh; O’Regan, Donal 2 2019 Inertial manifold for semi-linear non-instantaneous impulsive parabolic equations in an admissible space. Zbl 07264431Yang, Peng; Wang, JinRong; O’Regan, Donal; Fečkan, Michal 2 2019 Weakly demicompact linear operators and axiomatic measures of weak noncompactness. Zbl 07289609Krichen, Bilel; O’Regan, Donal 2 2019 On the Hermite-Hadamard type inequality for \(\psi\)-Riemann-Liouville fractional integrals via convex functions. Zbl 07459055Liu, Kui; Wang, JinRong; O’Regan, Donal 1 2019 Nontrivial solutions for an integral boundary value problem involving Riemann-Liouville fractional derivatives. Zbl 07459132Fu, Zhengqing; Bai, Shikun; O’Regan, Donal; Xu, Jiafa 1 2019 A surjectivity problem for 3 by 3 matrices. Zbl 1422.30012Buşe, Constantin; O’Regan, Donal; Saierli, Olivia 1 2019 500 examples and problems of applied differential equations. Zbl 1429.34001Agarwal, Ravi P.; Hodis, Simona; O’Regan, Donal 1 2019 Topological fixed point theory for compact multifunctions via homotopy and essential maps. Zbl 1427.54061O’Regan, Donal 1 2019 A note on general coincidence theory for set-valued maps in topological vector spaces. Zbl 1396.54042O’Regan, Donal 1 2019 Stable manifolds for non-instantaneous impulsive nonautonomous differential equations. Zbl 1449.34128Li, Mengmeng; Wang, JinRong; O’Regan, Donal 1 2019 Existence and uniqueness of mild solutions for a final value problem for nonlinear fractional diffusion systems. Zbl 1476.35313Ngoc, Tran Bao; Tuan, Nguyen Huy; O’Regan, Donal 1 2019 A note on initial value problems for fractional fuzzy differential equations. Zbl 1397.34013Ngo, Hoa Van; Lupulescu, Vasile; O’Regan, Donal 21 2018 Ergodic property of a Lotka-Volterra predator-prey model with white noise higher order perturbation under regime switching. Zbl 1427.37070Zu, Li; Jiang, Daqing; O’Regan, Donal; Hayat, Tasawar; Ahmad, Bashir 16 2018 On the orbital Hausdorff dependence of differential equations with non-instantaneous impulses. (Sur la dépendance orbitale de Hausdorff des équations différentielles avec impulsions non instantanées.) Zbl 1384.34023Yang, Dan; Wang, JinRong; O’Regan, Donal 16 2018 On the solutions of certain fractional kinetic equations involving \(k\)-Mittag-Leffler function. Zbl 1446.35243Agarwal, P.; Chand, M.; Baleanu, D.; O’Regan, D.; Jain, Shilpi 15 2018 Topological structure of the solution set for fractional non-instantaneous impulsive evolution inclusions. Zbl 1398.34088Wang, JinRong; Ibrahim, A. G.; O’Regan, D. 15 2018 Positive solutions for a system of nonlinear semipositone boundary value problems with Riemann-Liouville fractional derivatives. Zbl 1393.34018Qiu, Xiaowei; Xu, Jiafa; O’Regan, Donal; Cui, Yujun 14 2018 Representation of a solution for a fractional linear system with pure delay. Zbl 1462.34105Liang, Chengbin; Wang, JinRong; O’Regan, D. 12 2018 Controllability for noninstantaneous impulsive semilinear functional differential inclusions without compactness. Zbl 1401.26018Wang, JinRong; Ibrahim, A. G.; O’Regan, D.; Zhou, Yong 11 2018 Some comments and notes on almost periodic functions and changing-periodic time scales. Zbl 1371.26044Agarwal, Ravi P.; O’Regan, Donal 10 2018 Nontrivial solutions for boundary value problems of a fourth order difference equation with sign-changing nonlinearity. Zbl 1448.39023Zhang, Keyu; O’Regan, Donal; Fu, Zhengqing 9 2018 On the class of relatively weakly demicompact nonlinear operators. Zbl 1455.58005Krichen, Bilel; O’Regan, Donal 8 2018 A class of nonlinear non-instantaneous impulsive differential equations involving parameters and fractional order. Zbl 1426.34021Yang, Dan; Wang, JinRong; O’Regan, D. 8 2018 Inequalities of Hardy type and generalizations on time scales. Zbl 1384.26046Saker, Samir H.; Osman, Mahmoud M.; O’Regan, Donal; Agarwal, Ravi P. 7 2018 Positive solutions for a system of semipositone fractional difference boundary value problems. Zbl 1400.39006Chen, Cheng; Xu, Jiafa; O’Regan, Donal; Fu, Zhengqing 7 2018 Iterative learning control for noninstantaneous impulsive fractional-order systems with varying trial lengths. Zbl 1405.93116Liu, Shengda; Wang, JinRong; Shen, Dong; O’Regan, D. 6 2018 Some stability properties related to initial time difference for Caputo fractional differential equations. Zbl 1393.34011Agarwal, Ravi; Hristova, Snezhana; O’Regan, Donal 6 2018 \(F(\psi,\phi)\)-contractions for \(\alpha\)-admissible mappings on \(M\)-metric spaces. Zbl 1462.54081Monfared, Hossein; Asadi, Mehdi; Azhini, Mahdi; O’Regan, Donal 5 2018 Stationary points of set-valued contractive and nonexpansive mappings on ultrametric spaces. Zbl 1460.54044Hosseini, Meraj; Nourouzi, Kourosh; O’Regan, Donal 5 2018 \(n_0\)-order \(\Delta\)-almost periodic functions and dynamic equations. Zbl 1402.26017Wang, Chao; Agarwal, Ravi P.; O’Regan, Donal 5 2018 On state dependent non-local conditions. Zbl 06892565Hernández, Eduardo; O’Regan, Donal 4 2018 ...and 996 more Documents all cited Publications top 5 cited Publications all top 5 Cited by 5,668 Authors 576 O’Regan, Donal 436 Agarwal, Ravi P. 112 Wang, Jinrong 102 Ahmad, Bashir 97 Jiang, Daqing 90 Ge, Weigao 85 Ntouyas, Sotiris K. 82 Nieto Roig, Juan Jose 72 Al-saedi, Ahmed Eid Salem 72 Liu, Lishan 65 Li, Tongxing 63 Graef, John R. 62 Grace, Said Rezk 62 Wong, Patricia J. Y. 59 Benchohra, Mouffak 55 Samet, Bessem 54 Băleanu, Dumitru I. 52 Saker, Samir H. 52 Wu, Yonghong 52 Zhou, Yong 50 Ma, Ruyun 49 Henderson, Johnny Lee 44 Kumam, Poom 43 Bohner, Martin J. 42 Hussain, Nawab 42 Shi, Haiping 36 Cabada, Alberto 36 Liu, Wenbin 35 Cho, Yeol Je 35 Precup, Radu 35 Sadarangani, Kishin B. 35 Staněk, Svatoslav 34 Abdeljawad, Thabet 34 Cui, Yujun 34 Khristova, Snezhana G. 34 Kong, Lingju 34 Nashine, Hemant Kumar 34 Wei, Zhongli 33 Abbas, Mujahid 33 Chen, Haibo 32 Fečkan, Michal 32 Feng, Meiqiang 32 Tian, Yu 32 Xu, Jiafa 31 Heidarkhani, Shapour 31 Zhang, Chenghui 30 Banaś, Józef 30 Karapınar, Erdal 30 Liu, Yansheng 30 Rachůnková, Irena 30 Tariboon, Jessada 29 Han, Zhenlai 29 Imdad, Mohammad 29 Liu, Yuji 28 Liu, Xia 28 Wang, Chao 28 Zhang, Xinguang 27 de la Sen, Manuel 27 Luo, Zhiguo 27 Minhós, Feliz Manuel 27 Papageorgiou, Nikolaos S. 27 Yan, Baoqiang 27 Zhang, Xuemei 25 Liu, Zhenhai 25 Ouahab, Abdelghani 25 Saadati, Reza 25 Shahzad, Naseer 25 Sun, Shurong 25 Zhang, Yuanbiao 24 Hernández, Eduardo M. 24 Radenovic, Stojan 23 Abbas, Said 23 Jleli, Mohamed Boussairi 23 Li, Yongkun 23 Ngo Van Hoa 23 Perera, Kanishka 22 Aydi, Hassen Mohamed 22 Chu, Jifeng 22 Kang, Shin Min 22 Ullah, Kifayat 22 Wang, Qiru 21 Altun, Ishak 21 Li, Yongxiang 21 Shen, Jianhua 21 Yan, Zuomao 20 Darwish, Mohamed Abdalla 20 Mahmudov, Nazim Idrisoglu 20 Pei, Minghe 20 Rădulescu, Vicenţiu D. 20 Sahu, Daya Ram 20 Sintunavarat, Wutiphol 20 Wang, Guotao 20 Zada, Akbar 19 Abbas, Syed 19 Afrouzi, Ghasem Alizadeh 19 Ahmad, Junaid 19 Anderson, Douglas Robert 19 Hayat, Tasawar 19 Su, Hua 19 Sugie, Jitsuro ...and 5,568 more Authors all top 5 Cited in 444 Serials 528 Advances in Difference Equations 402 Nonlinear Analysis. 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