Edit Profile (opens in new tab) Murio, Diego A. Compute Distance To: Compute Author ID: murio.diego-a Published as: Murio, D. A.; Murio, Diego A.; Murio, D.; Murio, Diego more...less Documents Indexed: 57 Publications since 1981 Co-Authors: 13 Co-Authors with 38 Joint Publications 90 Co-Co-Authors all top 5 Co-Authors 17 single-authored 7 Mejía, Carlos E. 6 Hinestroza, Doris 6 Zhan, Shenghe 5 Coles, C. W. 5 Guo, Lijia 5 Leung, Anthony Wing-Kwok 3 Zheng, Hongcai 2 King, John-Thomas 2 Liu, Yinghui 2 Roth, C. C. 1 Beck, James Vere 1 Lazer, Alan C. 1 Paloschi, Jorge R. all top 5 Serials 35 Computers & Mathematics with Applications 5 Journal of Computational and Applied Mathematics 2 Revista de la Unión Matemática Argentina 1 AIAA Journal 1 IMA Journal of Numerical Analysis 1 Inverse Problems 1 Portugaliae Mathematica 1 Revista Colombiana de Matemáticas 1 SIAM Journal on Scientific and Statistical Computing 1 Mathematical and Computer Modelling 1 Computers and Mathematics with Applications. Part A 1 Inverse Problems in Science and Engineering all top 5 Fields 54 Numerical analysis (65-XX) 36 Partial differential equations (35-XX) 11 Classical thermodynamics, heat transfer (80-XX) 5 Biology and other natural sciences (92-XX) 4 Integral equations (45-XX) 3 Real functions (26-XX) 3 Ordinary differential equations (34-XX) 2 Operator theory (47-XX) 2 Mechanics of deformable solids (74-XX) 2 Fluid mechanics (76-XX) 1 Potential theory (31-XX) 1 Integral transforms, operational calculus (44-XX) 1 Systems theory; control (93-XX) Publications by Year all cited Publications top 5 cited Publications Citations contained in zbMATH Open 49 Publications have been cited 718 times in 496 Documents Cited by ▼ Year ▼ Implicit finite difference approximation for time fractional diffusion equations. Zbl 1155.65372Murio, Diego A. 185 2008 Stable numerical solution of a fractional-diffusion inverse heat conduction problem. Zbl 1152.65463Murio, Diego A. 56 2007 Source term identification in 1-D IHCP. Zbl 1063.65102Yi, Zh.; Murio, D. A. 55 2004 Time fractional IHCP with Caputo fractional derivatives. Zbl 1165.65386Murio, Diego A. 49 2008 Discrete mollification and automatic numerical differentiation. Zbl 0910.65010Murio, D. A.; Mejía, C. E.; Zhan, S. 34 1998 Stable numerical evaluation of Grünwald-Letnikov fractional derivatives applied to a fractional IHCP. Zbl 1159.65313Murio, Diego A. 25 2009 Identification of source terms in 2-D IHCP. Zbl 1155.65376Yi, Z.; Murio, D. A. 24 2004 On the stable numerical evaluation of Caputo fractional derivatives. Zbl 1134.65335Murio, D. A. 21 2006 A mollified space-marching finite-difference algorithm for the two- dimensional inverse heat conduction problem with slab symmetry. Zbl 0731.65108Guo, Lijia; Murio, Diego 16 1991 Mollification and space marching. Zbl 1071.65130Murio, Diego A. 16 2003 Mollified hyperbolic method for coefficient identification problems. Zbl 0789.65090Mejía, C. E.; Murio, D. A. 15 1993 The mollification method and the numerical solution of the inverse heat conduction problem by finite differences. Zbl 0677.65122Murio, D. A. 14 1989 Automatic numerical differentiation by discrete mollification. Zbl 0626.65015Murio, D. A. 13 1987 Combined function specification-regularization procedure for solution of inverse heat conduction problem. Zbl 0587.76155Beck, James V.; Murio, Diego A. 12 1986 Source terms identification for time fractional diffusion equation. Zbl 1189.65199Murio, Diego; Mejía, Carlos E. 12 2008 Simultaneous space diffusivity and source term reconstruction in 2D IHCP. Zbl 1005.65106Coles, C.; Murio, D. A. 11 2001 Asymptotic analysis of a finite element method for Fredholm equations of the first kind. Zbl 0516.65033Groetsch, C. W.; King, J. T.; Murio, D. 11 1982 The mollification method and the numerical solution of an inverse heat conduction problem. Zbl 0471.65076Murio, Diego A. 10 1981 Parameter selection by discrete mollification and the numerical solution of the inverse heat conduction problem. Zbl 0645.65085Murio, Diego A. 9 1988 Monotone scheme for finite difference equations concerning steady-state prey-predator interactions. Zbl 0494.65052Lazer, Alan C.; Leung, Anthony W.; Murio, Diego A. 9 1982 Numerical solution of generalized IHCP by discrete mollification. Zbl 0858.65097Mejía, C. E.; Murio, D. A. 9 1996 Combined mollification - future temperatures procedure for solution of inverse heat conduction problem. Zbl 0671.65103Murio, Diego A.; Paloschi, Jorge R. 8 1988 A mollified space marching finite differences algorithm for the inverse heat conduction problem with slab symmetry. Zbl 0693.73053Guo, L.; Murio, D. A.; Roth, C. 8 1990 Identification of parameters in the 2-D IHCP. Zbl 0961.65085Coles, C.; Murio, D. A. 8 2000 Numerical differentiation by finite-dimensional regularization. Zbl 0584.65008King, J. Thomas; Murio, Diego A. 7 1986 Discrete stability analysis of the mollification method for numerical differentiation. Zbl 0705.65014Murio, D. A.; Guo, L. 7 1990 Accelerated monotone scheme for finite difference equations concerning steady-state prey-predator interactions. Zbl 0607.65061Leung, Anthony W.; Murio, Diego A. 6 1986 New stable numerical inversion of Abel’s integral equation. Zbl 0757.65145Murio, Diego A.; Hinestroza G., Doris; Mejía, Carlos E. 6 1992 Solution of inverse heat conduction problems with phase changes by the mollification method. Zbl 0772.65090Murio, Diego A. 6 1992 An integral solution for the inverse heat conduction problem after the method of Weber. Zbl 0642.65079Murio, D.; Roth, C. C. 5 1988 On the estimation of the boundary temperature on a sphere from measurements at its center. Zbl 0479.65061Murio, Diego A. 5 1982 Numerical methods for inverse transient heat conduction problems. Zbl 0528.65048Murio, Diego A. 5 1981 Numerical identification of diffusivity coefficient and initial condition by discrete mollification. Zbl 0842.65060Mejía, C. E.; Murio, D. A. 4 1995 Numerical experiments in 2-D IHCP on bounded domains. I: The “interior” cube problem. Zbl 0848.65091Liu, Y.; Murio, D. A. 4 1996 Identification of parameters in one-dimensional IHCP. Zbl 0907.65126Zhan, S.; Murio, D. A. 4 1998 Some applications of the mollification method. Zbl 0986.65016Mejía, C. E.; Murio, D. A.; Zhan, S. 3 2001 A stable space marching finite differences algorithm for the inverse heat conduction problem with no initial filtering procedure. Zbl 0701.65081Murio, D. A.; Guo, L. 3 1990 Identification of transmissivity coefficients by mollification techniques. I: One-dimensional elliptic and parabolic problems. Zbl 0774.65089Hinestroza, Doris; Murio, Diego A. 3 1993 The space marching solution of the inverse heat conduction problem and the identification of the initial temperature distribution. Zbl 0781.65100Murio, Diego A.; Hinestroza, Doris 3 1993 Recovery of the transient heat transfer coefficient in the nonlinear boundary value problem for the heat equation. Zbl 0777.65071Hinestroza, Doris; Murio, Diego A. 3 1993 Automatic numerical solution of generalized 2-D IHCP by discrete mollification. Zbl 0983.65109Zhan, Shenghe; Coles, C.; Murio, D. A. 2 2001 Numerical identification of forcing terms by discrete mollification. Zbl 0685.93015Murio, D. A.; Hinestroza, D. 2 1989 Parameter estimation for a drying system in a porous medium. Zbl 1135.76050Coles, C.; Murio, D. 2 2006 Numerical identification of interface source functions in heat transfer problems under nonlinear boundary conditions. Zbl 0772.65089Murio, Diego A. 2 1992 Surface fitting and numerical gradient computations by discrete mollification. Zbl 0942.65017Zhan, S.; Murio, D. A. 2 1999 Numerical solutions of inverse spatial Lotka-Volterra systems. Zbl 1086.92049Coles, C.; Murio, D. 1 2005 3D-IHCP on a finite cube. Zbl 0848.65090Zheng, H.; Murio, D. A. 1 1996 A stable algorithm for 3D-IHCP. Zbl 0821.65083Murio, D. A.; Zheng, H. C. 1 1995 Accelerated monotone scheme for finite difference equations concerning steady-state prey-predator interactions. Zbl 0612.65045Leung, Anthony W.; Murio, Diego A. 1 1987 Stable numerical evaluation of Grünwald-Letnikov fractional derivatives applied to a fractional IHCP. Zbl 1159.65313Murio, Diego A. 25 2009 Implicit finite difference approximation for time fractional diffusion equations. Zbl 1155.65372Murio, Diego A. 185 2008 Time fractional IHCP with Caputo fractional derivatives. Zbl 1165.65386Murio, Diego A. 49 2008 Source terms identification for time fractional diffusion equation. Zbl 1189.65199Murio, Diego; Mejía, Carlos E. 12 2008 Stable numerical solution of a fractional-diffusion inverse heat conduction problem. Zbl 1152.65463Murio, Diego A. 56 2007 On the stable numerical evaluation of Caputo fractional derivatives. Zbl 1134.65335Murio, D. A. 21 2006 Parameter estimation for a drying system in a porous medium. Zbl 1135.76050Coles, C.; Murio, D. 2 2006 Numerical solutions of inverse spatial Lotka-Volterra systems. Zbl 1086.92049Coles, C.; Murio, D. 1 2005 Source term identification in 1-D IHCP. Zbl 1063.65102Yi, Zh.; Murio, D. A. 55 2004 Identification of source terms in 2-D IHCP. Zbl 1155.65376Yi, Z.; Murio, D. A. 24 2004 Mollification and space marching. Zbl 1071.65130Murio, Diego A. 16 2003 Simultaneous space diffusivity and source term reconstruction in 2D IHCP. Zbl 1005.65106Coles, C.; Murio, D. A. 11 2001 Some applications of the mollification method. Zbl 0986.65016Mejía, C. E.; Murio, D. A.; Zhan, S. 3 2001 Automatic numerical solution of generalized 2-D IHCP by discrete mollification. Zbl 0983.65109Zhan, Shenghe; Coles, C.; Murio, D. A. 2 2001 Identification of parameters in the 2-D IHCP. Zbl 0961.65085Coles, C.; Murio, D. A. 8 2000 Surface fitting and numerical gradient computations by discrete mollification. Zbl 0942.65017Zhan, S.; Murio, D. A. 2 1999 Discrete mollification and automatic numerical differentiation. Zbl 0910.65010Murio, D. A.; Mejía, C. E.; Zhan, S. 34 1998 Identification of parameters in one-dimensional IHCP. Zbl 0907.65126Zhan, S.; Murio, D. A. 4 1998 Numerical solution of generalized IHCP by discrete mollification. Zbl 0858.65097Mejía, C. E.; Murio, D. A. 9 1996 Numerical experiments in 2-D IHCP on bounded domains. I: The “interior” cube problem. Zbl 0848.65091Liu, Y.; Murio, D. A. 4 1996 3D-IHCP on a finite cube. Zbl 0848.65090Zheng, H.; Murio, D. A. 1 1996 Numerical identification of diffusivity coefficient and initial condition by discrete mollification. Zbl 0842.65060Mejía, C. E.; Murio, D. A. 4 1995 A stable algorithm for 3D-IHCP. Zbl 0821.65083Murio, D. A.; Zheng, H. C. 1 1995 Mollified hyperbolic method for coefficient identification problems. Zbl 0789.65090Mejía, C. E.; Murio, D. A. 15 1993 Identification of transmissivity coefficients by mollification techniques. I: One-dimensional elliptic and parabolic problems. Zbl 0774.65089Hinestroza, Doris; Murio, Diego A. 3 1993 The space marching solution of the inverse heat conduction problem and the identification of the initial temperature distribution. Zbl 0781.65100Murio, Diego A.; Hinestroza, Doris 3 1993 Recovery of the transient heat transfer coefficient in the nonlinear boundary value problem for the heat equation. Zbl 0777.65071Hinestroza, Doris; Murio, Diego A. 3 1993 New stable numerical inversion of Abel’s integral equation. Zbl 0757.65145Murio, Diego A.; Hinestroza G., Doris; Mejía, Carlos E. 6 1992 Solution of inverse heat conduction problems with phase changes by the mollification method. Zbl 0772.65090Murio, Diego A. 6 1992 Numerical identification of interface source functions in heat transfer problems under nonlinear boundary conditions. Zbl 0772.65089Murio, Diego A. 2 1992 A mollified space-marching finite-difference algorithm for the two- dimensional inverse heat conduction problem with slab symmetry. Zbl 0731.65108Guo, Lijia; Murio, Diego 16 1991 A mollified space marching finite differences algorithm for the inverse heat conduction problem with slab symmetry. Zbl 0693.73053Guo, L.; Murio, D. A.; Roth, C. 8 1990 Discrete stability analysis of the mollification method for numerical differentiation. Zbl 0705.65014Murio, D. A.; Guo, L. 7 1990 A stable space marching finite differences algorithm for the inverse heat conduction problem with no initial filtering procedure. Zbl 0701.65081Murio, D. A.; Guo, L. 3 1990 The mollification method and the numerical solution of the inverse heat conduction problem by finite differences. Zbl 0677.65122Murio, D. A. 14 1989 Numerical identification of forcing terms by discrete mollification. Zbl 0685.93015Murio, D. A.; Hinestroza, D. 2 1989 Parameter selection by discrete mollification and the numerical solution of the inverse heat conduction problem. Zbl 0645.65085Murio, Diego A. 9 1988 Combined mollification - future temperatures procedure for solution of inverse heat conduction problem. Zbl 0671.65103Murio, Diego A.; Paloschi, Jorge R. 8 1988 An integral solution for the inverse heat conduction problem after the method of Weber. Zbl 0642.65079Murio, D.; Roth, C. C. 5 1988 Automatic numerical differentiation by discrete mollification. Zbl 0626.65015Murio, D. A. 13 1987 Accelerated monotone scheme for finite difference equations concerning steady-state prey-predator interactions. Zbl 0612.65045Leung, Anthony W.; Murio, Diego A. 1 1987 Combined function specification-regularization procedure for solution of inverse heat conduction problem. Zbl 0587.76155Beck, James V.; Murio, Diego A. 12 1986 Numerical differentiation by finite-dimensional regularization. Zbl 0584.65008King, J. Thomas; Murio, Diego A. 7 1986 Accelerated monotone scheme for finite difference equations concerning steady-state prey-predator interactions. Zbl 0607.65061Leung, Anthony W.; Murio, Diego A. 6 1986 Asymptotic analysis of a finite element method for Fredholm equations of the first kind. Zbl 0516.65033Groetsch, C. W.; King, J. T.; Murio, D. 11 1982 Monotone scheme for finite difference equations concerning steady-state prey-predator interactions. Zbl 0494.65052Lazer, Alan C.; Leung, Anthony W.; Murio, Diego A. 9 1982 On the estimation of the boundary temperature on a sphere from measurements at its center. Zbl 0479.65061Murio, Diego A. 5 1982 The mollification method and the numerical solution of an inverse heat conduction problem. Zbl 0471.65076Murio, Diego A. 10 1981 Numerical methods for inverse transient heat conduction problems. Zbl 0528.65048Murio, Diego A. 5 1981 all cited Publications top 5 cited Publications all top 5 Cited by 645 Authors 37 Murio, Diego A. 26 Fu, Chuli 26 Yang, Fan 20 Li, Xiaoxiao 20 Wei, Ting 17 Xiong, Xiangtuan 11 Lesnic, Daniel 10 Hon, Yiu-Chung 10 Mejía, Carlos E. 10 Yan, Liang 9 Qian, Zhi 8 Dou, Fangfang 8 Liu, Jijun 8 Wang, Jungang 8 Zhao, Zhenyu 7 Coles, C. W. 7 Wang, Hong 7 Yang, Fenglian 6 Chen, Wen 6 Hinestroza, Doris 6 Liu, Fawang 6 Liu, Songshu 6 Sun, Chunlong 6 Wei, LeiLei 6 Xue, Xuemin 5 Acosta, Carlos Daniel 5 Cheng, Wei 5 Feng, Xiaoli 5 George, Santhosh 5 He, Yinnian 5 Hu, Xiuling 5 Jiang, Xiaoyun 5 Johansson, B. Tomas 5 Meng, Zehong 5 Slodička, Marián 5 Tang, Yifa 5 Wang, Fenling 5 Wang, Yuanming 5 Zhao, Yanmin 5 Zheng, Guanghui 4 Babaei, Afshin 4 Feng, Lixin 4 Ismailov, Mansur I. 4 Jia, Xianzheng 4 Kumar, Sushil 4 Leung, Anthony Wing-Kwok 4 Li, Changpin 4 Li, Gongsheng 4 Ma, Yunjie 4 Nguyen Huy Tuan 4 Pao, Chia-Ven 4 Pourgholi, Reza 4 Sun, Hongguang 4 Turner, Ian William 4 Yamamoto, Masahiro 4 Yan, Xiongbin 4 Yang, Liu 4 Zhan, Shenghe 4 Zhang, Luming 4 Zhang, Yuanxiang 3 Abbas, Muhammad Mohsin 3 Amiraslani, Amir 3 An, Na 3 Argyros, Ioannis Konstantinos 3 Bodaghi, Soheila 3 Carrer, José Antonio Marques 3 Damor, Ramesh S. 3 Deng, Zuicha 3 Foadian, Saedeh 3 Fu, Hongfei 3 Garshasbi, Morteza 3 Guo, Hengzhen 3 Guo, Lijia 3 Haq, Sirajul 3 He, Shangqin 3 Huang, Chaobao 3 Jiang, Suzhen 3 King, John-Thomas 3 Kolodziej, Jan Adam 3 Kumar, Sunil 3 Li, Dungang 3 Luo, Guanwei 3 Mierzwiczak, Magdalena 3 Onyango, Thomas T. M. 3 Pogány, Tibor K. 3 Reeve, Thomas 3 Ruan, Zhousheng 3 Seaïd, Mohammed 3 Shi, Yanhua 3 Shi, Zhengguang 3 Shukla, Ajay Kumar 3 Singh, Om Prakash 3 Sun, Haiwei 3 Trevelyan, Jon 3 Vong, Seakweng 3 Wang, Zewen 3 Wang, Zhibo 3 Wen, Jin 3 Wong, Patricia J. Y. 3 Wu, Yujiang ...and 545 more Authors all top 5 Cited in 127 Serials 62 Computers & Mathematics with Applications 34 Inverse Problems in Science and Engineering 30 Journal of Computational and Applied Mathematics 29 Applied Mathematics and Computation 23 Applied Numerical Mathematics 22 Applied Mathematical Modelling 17 Journal of Computational Physics 15 Engineering Analysis with Boundary Elements 12 Computational and Applied Mathematics 11 International Journal of Computer Mathematics 9 Advances in Difference Equations 8 Numerical Algorithms 7 Mathematics and Computers in Simulation 7 Numerical Methods for Partial Differential Equations 7 Journal of Inverse and Ill-Posed Problems 6 Applicable Analysis 6 Inverse Problems 6 Journal of Mathematical Analysis and Applications 6 Chaos, Solitons and Fractals 6 Mathematical Problems in Engineering 6 Advances in Mathematical Physics 5 Boundary Value Problems 5 AIMS Mathematics 4 Journal of Engineering Mathematics 4 Mathematical Methods in the Applied Sciences 4 Acta Applicandae Mathematicae 4 Abstract and Applied Analysis 4 Communications in Nonlinear Science and Numerical Simulation 3 Numerical Functional Analysis and Optimization 3 Applied Mathematics Letters 3 Journal of Scientific Computing 3 Fractional Calculus & Applied Analysis 3 Journal of Applied Mathematics 3 Bulletin of the Malaysian Mathematical Sciences Society. Second Series 3 Asian-European Journal of Mathematics 3 International Journal of Applied and Computational Mathematics 2 Computer Methods in Applied Mechanics and Engineering 2 Journal of Mathematical Physics 2 Mathematics of Computation 2 BIT 2 International Journal for Numerical Methods in Engineering 2 Journal of Optimization Theory and Applications 2 Acta Mathematicae Applicatae Sinica. English Series 2 Mathematical and Computer Modelling 2 International Journal of Bifurcation and Chaos in Applied Sciences and Engineering 2 Filomat 2 Advances in Computational Mathematics 2 Journal of Mathematical Chemistry 2 Mathematical Modelling and Analysis 2 Journal of Applied Mathematics and Computing 2 International Journal of Wavelets, Multiresolution and Information Processing 2 Mathematics in Computer Science 2 Advances in Applied Mathematics and Mechanics 2 International Journal for Numerical Methods in Biomedical Engineering 2 Journal of Applied Analysis and Computation 2 Results in Applied Mathematics 1 Computer Physics Communications 1 International Journal of Heat and Mass Transfer 1 International Journal of Mathematical Education in Science and Technology 1 Journal of Statistical Physics 1 Linear and Multilinear Algebra 1 Physica A 1 Calcolo 1 Computing 1 Numerische Mathematik 1 SIAM Journal on Numerical Analysis 1 Statistics & Probability Letters 1 Applied Mathematics and Mechanics. (English Edition) 1 Chinese Annals of Mathematics. Series B 1 Statistics 1 Computational Mathematics and Modeling 1 Applications of Mathematics 1 Computational Mathematics and Mathematical Physics 1 Automation and Remote Control 1 European Journal of Operational Research 1 Linear Algebra and its Applications 1 Computers and Mathematics with Applications. Part A 1 Continuum Mechanics and Thermodynamics 1 Applied Mathematics. Series B (English Edition) 1 International Journal of Numerical Methods for Heat & Fluid Flow 1 Turkish Journal of Mathematics 1 Advances in Applied Clifford Algebras 1 ETNA. Electronic Transactions on Numerical Analysis 1 The Journal of Fourier Analysis and Applications 1 Matematychni Metody ta Fizyko-Mekhanichni Polya 1 Journal of Vibration and Control 1 Vietnam Journal of Mathematics 1 ZAMM. Zeitschrift für Angewandte Mathematik und Mechanik 1 Chaos 1 International Journal of Applied Mathematics and Computer Science 1 Computational Geosciences 1 Archives of Computational Methods in Engineering 1 Dynamics of Continuous, Discrete & Impulsive Systems. Series A. Mathematical Analysis 1 Discrete and Continuous Dynamical Systems. Series B 1 Iranian Journal of Science and Technology. Transaction A: Science 1 Milan Journal of Mathematics 1 International Journal of Computational Methods 1 Foundations of Physics 1 European Series in Applied and Industrial Mathematics (ESAIM): Mathematical Modelling and Numerical Analysis 1 Complex Variables and Elliptic Equations ...and 27 more Serials all top 5 Cited in 35 Fields 418 Numerical analysis (65-XX) 357 Partial differential equations (35-XX) 58 Classical thermodynamics, heat transfer (80-XX) 46 Real functions (26-XX) 31 Operator theory (47-XX) 29 Integral equations (45-XX) 16 Fluid mechanics (76-XX) 12 Ordinary differential equations (34-XX) 12 Probability theory and stochastic processes (60-XX) 10 Calculus of variations and optimal control; optimization (49-XX) 9 Harmonic analysis on Euclidean spaces (42-XX) 9 Biology and other natural sciences (92-XX) 8 Systems theory; control (93-XX) 7 Mechanics of deformable solids (74-XX) 6 Approximations and expansions (41-XX) 5 Statistical mechanics, structure of matter (82-XX) 5 Game theory, economics, finance, and other social and behavioral sciences (91-XX) 4 Linear and multilinear algebra; matrix theory (15-XX) 4 Special functions (33-XX) 4 Integral transforms, operational calculus (44-XX) 4 Operations research, mathematical programming (90-XX) 4 Information and communication theory, circuits (94-XX) 3 Potential theory (31-XX) 3 Functional analysis (46-XX) 3 Statistics (62-XX) 3 Optics, electromagnetic theory (78-XX) 2 Functions of a complex variable (30-XX) 2 Relativity and gravitational theory (83-XX) 2 Geophysics (86-XX) 1 Number theory (11-XX) 1 Difference and functional equations (39-XX) 1 Geometry (51-XX) 1 Differential geometry (53-XX) 1 Global analysis, analysis on manifolds (58-XX) 1 Quantum theory (81-XX) Citations by Year