Dhar, Sougata; Kong, Qingkai Fractional Lyapunov-type inequalities with mixed boundary conditions on univariate and multivariate domains. (English) Zbl 1499.34042 J. Fract. Calc. Appl. 11, No. 2, 148-159 (2020). MSC: 34A08 26A33 34B15 26D20 PDFBibTeX XMLCite \textit{S. Dhar} and \textit{Q. Kong}, J. Fract. Calc. Appl. 11, No. 2, 148--159 (2020; Zbl 1499.34042) Full Text: Link
Kong, Qingkai; Zafer, Ağacık Lower bounds for the eigenvalues of first-order nonlinear Hamiltonian systems on time scales. (English) Zbl 1408.34073 Appl. Math. Lett. 90, 154-161 (2019). MSC: 34N05 34B08 34B09 37J99 39A10 PDFBibTeX XMLCite \textit{Q. Kong} and \textit{A. Zafer}, Appl. Math. Lett. 90, 154--161 (2019; Zbl 1408.34073) Full Text: DOI
Kong, Qingkai; St. George, Thomas E. Linear Sturm-Liouville problems with Riemann-Stieltjes integral boundary conditions. (English) Zbl 1511.34034 Opusc. Math. 38, No. 4, 557-571 (2018). MSC: 34B24 34B10 34B05 34C10 34L15 PDFBibTeX XMLCite \textit{Q. Kong} and \textit{T. E. St. George}, Opusc. Math. 38, No. 4, 557--571 (2018; Zbl 1511.34034) Full Text: DOI
Kong, Qingkai; Pašić, Mervan Non-monotonic behavior of one-signed solutions of quasilinear differential equations. (English) Zbl 1401.34034 Mediterr. J. Math. 15, No. 4, Paper No. 184, 1-17 (2018). Reviewer: Ahmed M. A. El-Sayed (Alexandria) MSC: 34C10 PDFBibTeX XMLCite \textit{Q. Kong} and \textit{M. Pašić}, Mediterr. J. Math. 15, No. 4, Paper No. 184, 1--17 (2018; Zbl 1401.34034) Full Text: DOI
Graef, John R.; Kong, Lingju; Kong, Qingkai; Wang, Min On a fractional boundary value problem with a perturbation term. (English) Zbl 1474.34169 J. Appl. Anal. Comput. 7, No. 1, 57-66 (2017). MSC: 34B18 34B15 34B27 34A08 47N20 PDFBibTeX XMLCite \textit{J. R. Graef} et al., J. Appl. Anal. Comput. 7, No. 1, 57--66 (2017; Zbl 1474.34169) Full Text: DOI
Dhar, Sougata; Kong, Qingkai Lyapunov-type inequalities for \(\alpha\)-th order fractional differential equations with \(2<\alpha\leq 3\) and fractional boundary conditions. (English) Zbl 1370.34012 Electron. J. Differ. Equ. 2017, Paper No. 203, 15 p. (2017). MSC: 34A08 34A40 26A33 34B05 PDFBibTeX XMLCite \textit{S. Dhar} and \textit{Q. Kong}, Electron. J. Differ. Equ. 2017, Paper No. 203, 15 p. (2017; Zbl 1370.34012) Full Text: Link
Zhang, Shao-Yan; Wang, Qi-Ru; Kong, Qingkai Asymptotics and oscillation of \(n\)th-order nonlinear dynamic equations on time scales. (English) Zbl 1410.34273 Appl. Math. Comput. 275, 324-334 (2016). MSC: 34N05 34C10 34D05 39A12 PDFBibTeX XMLCite \textit{S.-Y. Zhang} et al., Appl. Math. Comput. 275, 324--334 (2016; Zbl 1410.34273) Full Text: DOI
Dhar, Sougata; Kong, Qingkai Lyapunov-type inequalities for higher order half-linear differential equations. (English) Zbl 1410.34102 Appl. Math. Comput. 273, 114-124 (2016). MSC: 34C10 34A40 PDFBibTeX XMLCite \textit{S. Dhar} and \textit{Q. Kong}, Appl. Math. Comput. 273, 114--124 (2016; Zbl 1410.34102) Full Text: DOI
Kong, Qingkai; George, Thomas E. St. Linear Sturm-Liouville problems with general homogeneous linear multi-point boundary conditions. (English) Zbl 1357.34046 Math. Nachr. 289, No. 17-18, 2223-2234 (2016). MSC: 34B05 34B10 34B15 34B09 34B24 34L15 PDFBibTeX XMLCite \textit{Q. Kong} and \textit{T. E. St. George}, Math. Nachr. 289, No. 17--18, 2223--2234 (2016; Zbl 1357.34046) Full Text: DOI
Dhar, Sougata; Kong, Qingkai Lyapunov-type inequalities for odd order linear differential equations. (English) Zbl 1358.34032 Electron. J. Differ. Equ. 2016, Paper No. 243, 10 p. (2016). Reviewer: Antonio Cañada Villar (Granada) MSC: 34B05 26D10 47N20 PDFBibTeX XMLCite \textit{S. Dhar} and \textit{Q. Kong}, Electron. J. Differ. Equ. 2016, Paper No. 243, 10 p. (2016; Zbl 1358.34032) Full Text: EMIS
Dhar, Sougata; Kong, Qingkai; McCabe, Michael Fractional boundary value problems and Lyapunov-type inequalities with fractional integral boundary conditions. (English) Zbl 1363.34005 Electron. J. Qual. Theory Differ. Equ. 2016, Paper No. 43, 16 p. (2016). MSC: 34A08 34B10 34B05 PDFBibTeX XMLCite \textit{S. Dhar} et al., Electron. J. Qual. Theory Differ. Equ. 2016, Paper No. 43, 16 p. (2016; Zbl 1363.34005) Full Text: DOI
Dhar, Sougata; Kong, Qingkai Lyapunov-type inequalities for third-order linear differential equations. (English) Zbl 1345.34029 Math. Inequal. Appl. 19, No. 1, 297-312 (2016). Reviewer: Narahari Parhi (Bhubaneswar) MSC: 34B05 34A30 34B27 PDFBibTeX XMLCite \textit{S. Dhar} and \textit{Q. Kong}, Math. Inequal. Appl. 19, No. 1, 297--312 (2016; Zbl 1345.34029) Full Text: DOI
Sun, Huaqing; Kong, Qingkai; Shi, Yuming Essential spectrum of singular discrete linear Hamiltonian systems. (English) Zbl 1353.39008 Math. Nachr. 289, No. 2-3, 343-359 (2016). Reviewer: Petr Zemanek (Brno) MSC: 39A12 47A06 47B39 39A70 34L05 34B20 39A06 PDFBibTeX XMLCite \textit{H. Sun} et al., Math. Nachr. 289, No. 2--3, 343--359 (2016; Zbl 1353.39008) Full Text: DOI
Graef, John R.; Kong, Lingju; Kong, Qingkai Multiple solutions of systems of fractional boundary value problems. (English) Zbl 1323.34007 Appl. Anal. 94, No. 6, 1288-1304 (2015). Reviewer: Yong-Kui Chang (Xi’an) MSC: 34A08 34B15 58E50 PDFBibTeX XMLCite \textit{J. R. Graef} et al., Appl. Anal. 94, No. 6, 1288--1304 (2015; Zbl 1323.34007) Full Text: DOI
Kong, Qingkai; George, Thomas E. St. Existence of Nodal solutions of boundary value problems with two multi-point boundary conditions. (English) Zbl 1312.34052 Dyn. Syst. Appl. 23, No. 2-3, 245-264 (2014). MSC: 34B10 34B15 47N20 PDFBibTeX XMLCite \textit{Q. Kong} and \textit{T. E. St. George}, Dyn. Syst. Appl. 23, No. 2--3, 245--264 (2014; Zbl 1312.34052)
Kong, Lingju; Kong, Qingkai; Wang, Min Existence and uniqueness of solutions for a fractional boundary value problem with a separated boundary condition. (English) Zbl 1310.34008 Dyn. Syst. Appl. 23, No. 4, 691-698 (2014). MSC: 34A08 34B15 34B27 PDFBibTeX XMLCite \textit{L. Kong} et al., Dyn. Syst. Appl. 23, No. 4, 691--698 (2014; Zbl 1310.34008)
Kong, Qingkai A short course in ordinary differential equations. (English) Zbl 1326.34007 Universitext. Cham: Springer (ISBN 978-3-319-11238-1/hbk; 978-3-319-11239-8/ebook). xii, 267 p. (2014). Reviewer: Yuriy V. Rogovchenko (Kristiansand) MSC: 34-01 34Axx 37Cxx PDFBibTeX XMLCite \textit{Q. Kong}, A short course in ordinary differential equations. Cham: Springer (2014; Zbl 1326.34007) Full Text: DOI
Dhar, Sougata; Kong, Qingkai Liapunov-type inequalities for third-order half-linear equations and applications to boundary value problems. (English) Zbl 1309.34026 Nonlinear Anal., Theory Methods Appl., Ser. A, Theory Methods 110, 170-181 (2014). Reviewer: George Karakostas (Ioannina) MSC: 34B15 34C10 PDFBibTeX XMLCite \textit{S. Dhar} and \textit{Q. Kong}, Nonlinear Anal., Theory Methods Appl., Ser. A, Theory Methods 110, 170--181 (2014; Zbl 1309.34026) Full Text: DOI
Kong, Qingkai; Pašić, Mervan Second-order differential equations: some significant results due to James S.W. Wong. (English) Zbl 1294.34038 Differ. Equ. Appl. 6, No. 1, 99-163 (2014). Reviewer: Ondřej Došlý (Brno) MSC: 34C10 PDFBibTeX XMLCite \textit{Q. Kong} and \textit{M. Pašić}, Differ. Equ. Appl. 6, No. 1, 99--163 (2014; Zbl 1294.34038) Full Text: DOI Link
Graef, John; Kong, Lingju; Kong, Qingkai; Wang, Min Existence and uniqueness of solutions for a fractional boundary value problem with Dirichlet boundary condition. (English) Zbl 1340.34015 Electron. J. Qual. Theory Differ. Equ. 2013, Paper No. 55, 11 p. (2013). MSC: 34A08 34B15 34B27 PDFBibTeX XMLCite \textit{J. Graef} et al., Electron. J. Qual. Theory Differ. Equ. 2013, Paper No. 55, 11 p. (2013; Zbl 1340.34015) Full Text: DOI Link
Graef, John R.; Kong, Lingju; Kong, Qingkai; Wang, Min Positive solutions of nonlocal fractional boundary value problems. (English) Zbl 1310.34006 Discrete Contin. Dyn. Syst. 2013, Suppl., 283-290 (2013). MSC: 34A08 34B15 34B18 34B27 34B10 47N20 PDFBibTeX XMLCite \textit{J. R. Graef} et al., Discrete Contin. Dyn. Syst. 2013, 283--290 (2013; Zbl 1310.34006) Full Text: Link
Graef, J. R.; Kong, L.; Kong, Q. Infinitely many solutions for a discrete fourth order boundary value problem. (English) Zbl 1307.39002 Nonlinear Dyn. Syst. Theory 13, No. 4, 400-411 (2013). MSC: 39A10 34B08 34B15 58E30 PDFBibTeX XMLCite \textit{J. R. Graef} et al., Nonlinear Dyn. Syst. Theory 13, No. 4, 400--411 (2013; Zbl 1307.39002)
Kong, Lingju; Kong, Qingkai; Kwong, Man K.; Wong, James S. W. Linear Sturm-Liouville problems with multi-point boundary conditions. (English) Zbl 1286.34048 Math. Nachr. 286, No. 11-12, 1167-1179 (2013). Reviewer: Alan L. Andrew (Bundoora) MSC: 34B24 34B10 34B09 34C10 34L10 34L15 PDFBibTeX XMLCite \textit{L. Kong} et al., Math. Nachr. 286, No. 11--12, 1167--1179 (2013; Zbl 1286.34048) Full Text: DOI
Graef, John R.; Kong, Lingju; Kong, Qingkai; Wang, Min Fractional boundary value problems with integral boundary conditions. (English) Zbl 1385.34010 Appl. Anal. 92, No. 10, 2008-2020 (2013). MSC: 34A08 34B15 34B18 34B27 34B10 47N20 PDFBibTeX XMLCite \textit{J. R. Graef} et al., Appl. Anal. 92, No. 10, 2008--2020 (2013; Zbl 1385.34010) Full Text: DOI
Kong, Qingkai; George, Thomas E. St. Matching method for nodal solutions of multi-point boundary value problems. (English) Zbl 1279.34033 Differ. Equ. Appl. 5, No. 1, 13-31 (2013). Reviewer: Haiyan Wang (Phoenix) MSC: 34B10 34B15 34L15 PDFBibTeX XMLCite \textit{Q. Kong} and \textit{T. E. St. George}, Differ. Equ. Appl. 5, No. 1, 13--31 (2013; Zbl 1279.34033) Full Text: DOI Link
Graef, John R.; Kong, Lingju; Kong, Qingkai; Wang, Min Uniqueness and parameter dependence of positive solutions to higher order boundary value problems with fractional Q-derivatives. (English) Zbl 1286.34009 J. Appl. Anal. Comput. 3, No. 1, 21-35 (2013). MSC: 34A08 34B18 PDFBibTeX XMLCite \textit{J. R. Graef} et al., J. Appl. Anal. Comput. 3, No. 1, 21--35 (2013; Zbl 1286.34009)
Kong, Qingkai; Wang, Min Eigenvalue approach to even order system periodic boundary value problems. (English) Zbl 1267.34048 Can. Math. Bull. 56, No. 1, 102-115 (2013). Reviewer: Gennaro Infante (Arcavata di Rende) MSC: 34B18 34B24 34L15 34B15 34B27 PDFBibTeX XMLCite \textit{Q. Kong} and \textit{M. Wang}, Can. Math. Bull. 56, No. 1, 102--115 (2013; Zbl 1267.34048) Full Text: DOI
Kong, Qingkai; Wang, Qi-Ru Using time scales to study multi-interval Sturm-Liouville problems with interface conditions. (English) Zbl 1263.34032 Result. Math. 63, No. 1-2, 451-465 (2013). Reviewer: Bilender P. Allahverdiev (Isparta) MSC: 34B24 34N05 34B10 34L15 PDFBibTeX XMLCite \textit{Q. Kong} and \textit{Q.-R. Wang}, Result. Math. 63, No. 1--2, 451--465 (2013; Zbl 1263.34032) Full Text: DOI
Graef, John R.; Kong, Lingju; Kong, Qingkai Application of the mixed monotone operator method to fractional boundary value problems. (English) Zbl 1412.34086 Fract. Differ. Calc. 2, No. 1, 87-98 (2012). MSC: 34B15 34B18 PDFBibTeX XMLCite \textit{J. R. Graef} et al., Fract. Differ. Calc. 2, No. 1, 87--98 (2012; Zbl 1412.34086) Full Text: DOI
Kong, Qingkai; Wang, Min Even order system boundary value problems with periodic boundary conditions. (English) Zbl 1332.34037 Ladde, G. S. (ed.) et al., Dynamic systems and applications. Vol. 6. Proceedings of the 6th international conference, Morehouse College, Atlanta, GA, USA, May 25–28, 2011. Atlanta, GA: Dynamic Publishers (ISBN 1-890888-06-0/hbk). 223-228 (2012). MSC: 34B15 34B18 PDFBibTeX XMLCite \textit{Q. Kong} and \textit{M. Wang}, in: Dynamic systems and applications. Vol. 6. Proceedings of the 6th international conference, Morehouse College, Atlanta, GA, USA, May 25--28, 2011. Atlanta, GA: Dynamic Publishers. 223--228 (2012; Zbl 1332.34037)
Hassan, T.; Kong, Qingkai Oscillation of forced impulsive differential equations with \(p\)-Laplacian and nonlinearities given by Riemann-Stieltjes integrals. (English) Zbl 1340.34128 Electron. J. Qual. Theory Differ. Equ. 2012, Paper No. 98, 16 p. (2012). MSC: 34C10 34A37 34C20 PDFBibTeX XMLCite \textit{T. Hassan} and \textit{Q. Kong}, Electron. J. Qual. Theory Differ. Equ. 2012, Paper No. 98, 16 p. (2012; Zbl 1340.34128) Full Text: DOI
Kong, Qingkai; Wang, Min Positive solutions of nonlinear fractional boundary value problems with Dirichlet boundary conditions. (English) Zbl 1340.34020 Electron. J. Qual. Theory Differ. Equ. 2012, Paper No. 17, 13 p. (2012). MSC: 34A08 34B15 34B18 47N20 PDFBibTeX XMLCite \textit{Q. Kong} and \textit{M. Wang}, Electron. J. Qual. Theory Differ. Equ. 2012, Paper No. 17, 13 p. (2012; Zbl 1340.34020) Full Text: DOI
Graef, John R.; Kong, Lingju; Kong, Qingkai; Wang, Min Uniqueness of positive solutions of fractional boundary value problems with non-homogeneous integral boundary conditions. (English) Zbl 1279.34007 Fract. Calc. Appl. Anal. 15, No. 3, 509-528 (2012). Reviewer: Yong-Kui Chang (Lanzhou) MSC: 34A08 34B15 34B18 34B10 34B27 34A45 PDFBibTeX XMLCite \textit{J. R. Graef} et al., Fract. Calc. Appl. Anal. 15, No. 3, 509--528 (2012; Zbl 1279.34007) Full Text: DOI
Graef, John R.; Kong, Lingju; Kong, Qingkai On a generalized discrete beam equation via variational methods. (English) Zbl 1278.39005 Commun. Appl. Anal. 16, No. 3, 293-308 (2012). Reviewer: Pavel Rehak (Brno) MSC: 39A12 39A10 34B08 34B15 74K10 PDFBibTeX XMLCite \textit{J. R. Graef} et al., Commun. Appl. Anal. 16, No. 3, 293--308 (2012; Zbl 1278.39005)
Hassan, Taher S.; Kong, Qingkai Interval criteria for forced oscillation of differential equations with \(p\)-Laplacian and nonlinearities given by Riemann-Stieltjes integrals. (English) Zbl 1258.34065 J. Korean Math. Soc. 49, No. 5, 1017-1030 (2012). Reviewer: Jan Ohriska (Košice) MSC: 34C10 PDFBibTeX XMLCite \textit{T. S. Hassan} and \textit{Q. Kong}, J. Korean Math. Soc. 49, No. 5, 1017--1030 (2012; Zbl 1258.34065) Full Text: DOI
Kong, Qingkai; Zettl, Anton Inverse Sturm-Liouville problems with finite spectrum. (English) Zbl 1232.34023 J. Math. Anal. Appl. 386, No. 1, 1-9 (2012). MSC: 34A55 34B24 PDFBibTeX XMLCite \textit{Q. Kong} and \textit{A. Zettl}, J. Math. Anal. Appl. 386, No. 1, 1--9 (2012; Zbl 1232.34023) Full Text: DOI
Hassan, Taher S.; Kong, Qingkai Interval criteria for forced oscillation of differential equations with \(p\)-Laplacian, damping, and mixed nonlinearities. (English) Zbl 1251.34050 Dyn. Syst. Appl. 20, No. 2-3, 279-293 (2011). Reviewer: Cemil Tunç (Van) MSC: 34C10 PDFBibTeX XMLCite \textit{T. S. Hassan} and \textit{Q. Kong}, Dyn. Syst. Appl. 20, No. 2--3, 279--293 (2011; Zbl 1251.34050)
Kong, Qingkai; Wang, Min Positive solutions of even order periodic boundary value problems. (English) Zbl 1238.34045 Rocky Mt. J. Math. 41, No. 6, 1907-1931 (2011). Reviewer: Smail Djebali (Algiers) MSC: 34B18 34B15 47N20 PDFBibTeX XMLCite \textit{Q. Kong} and \textit{M. Wang}, Rocky Mt. J. Math. 41, No. 6, 1907--1931 (2011; Zbl 1238.34045) Full Text: DOI
Sun, Yuangong; Kong, Qingkai Interval criteria for forced oscillation with nonlinearities given by Riemann-Stieltjes integrals. (English) Zbl 1228.34055 Comput. Math. Appl. 62, No. 1, 243-252 (2011). MSC: 34C15 34K11 26A42 PDFBibTeX XMLCite \textit{Y. Sun} and \textit{Q. Kong}, Comput. Math. Appl. 62, No. 1, 243--252 (2011; Zbl 1228.34055) Full Text: DOI
Graef, John R.; Kong, Lingju; Kong, Qingkai; Yang, Bo Higher order boundary value problems with two point separated nonhomogeneous boundary conditions. (English) Zbl 1242.34037 Commun. Appl. Anal. 15, No. 2-4, 435-456 (2011). Reviewer: Ruyun Ma (Lanzhou) MSC: 34B15 34B18 PDFBibTeX XMLCite \textit{J. R. Graef} et al., Commun. Appl. Anal. 15, No. 2--4, 435--456 (2011; Zbl 1242.34037)
Kong, Qingkai; Wang, Xiaofei Nonlinear boundary value problems with \(p\)-Laplacian. (English) Zbl 1242.34032 Commun. Appl. Anal. 15, No. 1, 25-45 (2011). Reviewer: Zhiqing Han (Dalian) MSC: 34B09 34B15 34B24 34L10 PDFBibTeX XMLCite \textit{Q. Kong} and \textit{X. Wang}, Commun. Appl. Anal. 15, No. 1, 25--45 (2011; Zbl 1242.34032)
Bellout, Hamid; Kong, Qingkai; Wang, Min Dependence of the unique solution of a periodic boundary value problem on the parameter. (English) Zbl 1228.34030 Appl. Math. Comput. 217, No. 19, 7838-7844 (2011). Reviewer: Feng Xie (Shanghai) MSC: 34B08 34B15 34B18 47N20 PDFBibTeX XMLCite \textit{H. Bellout} et al., Appl. Math. Comput. 217, No. 19, 7838--7844 (2011; Zbl 1228.34030) Full Text: DOI
Graef, John R.; Kong, Lingju; Kong, Qingkai; Yang, Bo Positive solutions to a fourth order boundary value problem. (English) Zbl 1218.34024 Result. Math. 59, No. 1-2, 141-155 (2011). Reviewer: Smail Djebali (Algiers) MSC: 34B18 47N20 PDFBibTeX XMLCite \textit{J. R. Graef} et al., Result. Math. 59, No. 1--2, 141--155 (2011; Zbl 1218.34024) Full Text: DOI Link
Chamberlain, Jeremy; Kong, Lingju; Kong, Qingkai Nodal solutions of boundary value problems with boundary conditions involving Riemann-Stieltjes integrals. (English) Zbl 1220.34027 Nonlinear Anal., Theory Methods Appl., Ser. A, Theory Methods 74, No. 6, 2380-2387 (2011). Reviewer: Gennaro Infante (Arcavata di Rende) MSC: 34B10 34B15 PDFBibTeX XMLCite \textit{J. Chamberlain} et al., Nonlinear Anal., Theory Methods Appl., Ser. A, Theory Methods 74, No. 6, 2380--2387 (2011; Zbl 1220.34027) Full Text: DOI
Graef, John R.; Kong, Lingju; Kong, Qingkai Higher order multi-point boundary value problems. (English) Zbl 1222.34019 Math. Nachr. 284, No. 1, 39-52 (2011). Reviewer: Alberto Cabada (Santiago de Compostela) MSC: 34B10 34B15 34B27 47N20 PDFBibTeX XMLCite \textit{J. R. Graef} et al., Math. Nachr. 284, No. 1, 39--52 (2011; Zbl 1222.34019) Full Text: DOI
Kong, Qingkai; Wong, James S. W. Oscillation of a forced second order differential equation with a deviating argument. (English) Zbl 1234.34043 Funct. Differ. Equ. 17, No. 1-2, 141-155 (2010). Reviewer: Kwok-wai Chung (Hong Kong) MSC: 34K11 34C10 PDFBibTeX XMLCite \textit{Q. Kong} and \textit{J. S. W. Wong}, Funct. Differ. Equ. 17, No. 1--2, 141--155 (2010; Zbl 1234.34043)
Graef, J. R.; Kong, Lingju; Kong, Qingkai; Wong, James S. W. Higher order multi-point boundary value problems with sign-changing nonlinearities and nonhomogeneous boundary conditions. (English) Zbl 1211.34014 Electron. J. Qual. Theory Differ. Equ. 2010, Paper No. 28, 40 p. (2010). MSC: 34B10 34B15 47N20 34B18 34B27 PDFBibTeX XMLCite \textit{J. R. Graef} et al., Electron. J. Qual. Theory Differ. Equ. 2010, Paper No. 28, 40 p. (2010; Zbl 1211.34014) Full Text: DOI EuDML EMIS
Graef, John R.; Kong, Lingju; Kong, Qingkai Ambrosetti-Prodi-type results for a third order multi-point boundary value problem. (English) Zbl 1205.34020 Nonlinear Stud. 17, No. 2, 121-130 (2010). MSC: 34B10 34B15 34B18 47N20 PDFBibTeX XMLCite \textit{J. R. Graef} et al., Nonlinear Stud. 17, No. 2, 121--130 (2010; Zbl 1205.34020)
Kong, Qingkai; Wang, Xiaofei Nonlinear initial value problems with \(p\)-Laplacian. (English) Zbl 1213.34013 Dyn. Syst. Appl. 19, No. 1, 33-43 (2010). Reviewer: Ovidiu Cârjă (Iaşi) MSC: 34A12 PDFBibTeX XMLCite \textit{Q. Kong} and \textit{X. Wang}, Dyn. Syst. Appl. 19, No. 1, 33--43 (2010; Zbl 1213.34013)
Kong, Qingkai; Wang, Min Positive solutions of boundary value problems with \(p\)-Laplacian. (English) Zbl 1203.34042 Electron. J. Differ. Equ. 2010, Paper No. 126, 16 p. (2010). MSC: 34B18 34B15 47N20 PDFBibTeX XMLCite \textit{Q. Kong} and \textit{M. Wang}, Electron. J. Differ. Equ. 2010, Paper No. 126, 16 p. (2010; Zbl 1203.34042) Full Text: EuDML EMIS
Kong, Qingkai; Wang, Min Positive solutions of even order system periodic boundary value problems. (English) Zbl 1195.34036 Nonlinear Anal., Theory Methods Appl., Ser. A, Theory Methods 72, No. 3-4, 1778-1791 (2010). Reviewer: Anatolij Ivan Kolosov (Khar’kov) MSC: 34B18 34B15 34B27 PDFBibTeX XMLCite \textit{Q. Kong} and \textit{M. Wang}, Nonlinear Anal., Theory Methods Appl., Ser. A, Theory Methods 72, No. 3--4, 1778--1791 (2010; Zbl 1195.34036) Full Text: DOI
Kong, Lingju; Kong, Qingkai; Wong, James S. W. Nodal solutions of multi-point boundary value problems. (English) Zbl 1195.34028 Nonlinear Anal., Theory Methods Appl., Ser. A, Theory Methods 72, No. 1, 382-389 (2010). Reviewer: Sergei A. Brykalov (Ekaterinburg) MSC: 34B10 34B15 PDFBibTeX XMLCite \textit{L. Kong} et al., Nonlinear Anal., Theory Methods Appl., Ser. A, Theory Methods 72, No. 1, 382--389 (2010; Zbl 1195.34028) Full Text: DOI
Kong, Lingju; Kong, Qingkai Higher order boundary value problems with nonhomogeneous boundary conditions. (English) Zbl 1191.34032 Nonlinear Anal., Theory Methods Appl., Ser. A, Theory Methods 72, No. 1, 240-261 (2010). Reviewer: Smail Djebali (Algiers) MSC: 34B18 34B15 34B10 47N20 34B09 PDFBibTeX XMLCite \textit{L. Kong} and \textit{Q. Kong}, Nonlinear Anal., Theory Methods Appl., Ser. A, Theory Methods 72, No. 1, 240--261 (2010; Zbl 1191.34032) Full Text: DOI
Kong, Qingkai; Wang, Min Positive solutions of second order nonlinear difference boundary value problems. (English) Zbl 1189.39007 Electron. J. Qual. Theory Differ. Equ. 2009, Spec. Iss. I, Paper No. 18, 15 p. (2009). MSC: 39A12 34B15 39A22 PDFBibTeX XMLCite \textit{Q. Kong} and \textit{M. Wang}, Electron. J. Qual. Theory Differ. Equ. 2009, Paper No. 18, 15 p. (2009; Zbl 1189.39007) Full Text: DOI EuDML EMIS
Kong, Lingju; Kong, Qingkai Existence of nodal solutions of multi-point boundary value problems. (English) Zbl 1236.34027 Discrete Contin. Dyn. Syst. 2009, Suppl., 457-465 (2009). MSC: 34B10 34B15 34B24 PDFBibTeX XMLCite \textit{L. Kong} and \textit{Q. Kong}, Discrete Contin. Dyn. Syst. 2009, 457--465 (2009; Zbl 1236.34027)
Chamberlain, J.; Kong, Lingju; Kong, Qingkai Nodal solutions of nonlocal boundary value problems. (English) Zbl 1193.34032 Math. Model. Anal. 14, No. 4, 435-450 (2009). Reviewer: Ruyun Ma (Lanzhou) MSC: 34B10 34B15 PDFBibTeX XMLCite \textit{J. Chamberlain} et al., Math. Model. Anal. 14, No. 4, 435--450 (2009; Zbl 1193.34032) Full Text: DOI
Kong, Qingkai; Wang, Qi-Ru; Zhu, Zhi-Qiang Kamenev-type oscillation criteria for second-order matrix dynamic equations on time scales. (English) Zbl 1184.34092 Dyn. Syst. Appl. 18, No. 3-4, 423-439 (2009). MSC: 34N05 34C10 PDFBibTeX XMLCite \textit{Q. Kong} et al., Dyn. Syst. Appl. 18, No. 3--4, 423--439 (2009; Zbl 1184.34092)
Kong, Lingju; Kong, Qingkai Uniqueness and parameter dependence of solutions of second-order boundary value problems. (English) Zbl 1181.34021 Appl. Math. Lett. 22, No. 11, 1633-1638 (2009). MSC: 34B08 34B10 34B18 PDFBibTeX XMLCite \textit{L. Kong} and \textit{Q. Kong}, Appl. Math. Lett. 22, No. 11, 1633--1638 (2009; Zbl 1181.34021) Full Text: DOI
Kong, Qingkai; Volkmer, Hans; Zettl, Anton Matrix representations of Sturm-Liouville problems with finite spectrum. (English) Zbl 1185.34032 Result. Math. 54, No. 1-2, 103-116 (2009). Reviewer: Andreas Fleige (Dortmund) MSC: 34B24 15A18 47B25 34B20 PDFBibTeX XMLCite \textit{Q. Kong} et al., Result. Math. 54, No. 1--2, 103--116 (2009; Zbl 1185.34032) Full Text: DOI
Graef, John R.; Kong, Lingju; Kong, Qingkai Existence of three solutions for a higher-order boundary-value problem. (English) Zbl 1173.34014 Electron. J. Differ. Equ. 2009, Conf. 17, 71-80 (2009). MSC: 34B18 34B15 34B10 47N20 PDFBibTeX XMLCite \textit{J. R. Graef} et al., Electron. J. Differ. Equ. 2009, 71--80 (2009; Zbl 1173.34014) Full Text: EuDML EMIS
Kong, Lingju; Kong, Qingkai Nodal solutions of second order nonlinear boundary value problems. (English) Zbl 1189.34043 Math. Proc. Camb. Philos. Soc. 146, No. 3, 747-763 (2009). Reviewer: Pierpaolo Omari (Trieste) MSC: 34B15 34B24 PDFBibTeX XMLCite \textit{L. Kong} and \textit{Q. Kong}, Math. Proc. Camb. Philos. Soc. 146, No. 3, 747--763 (2009; Zbl 1189.34043) Full Text: DOI
Kong, Lingju; Kong, Qingkai Multi-point boundary value problems of second-order differential equations. II. (English) Zbl 1140.34008 Commun. Appl. Nonlinear Anal. 14, No. 1, 93-111 (2007). Reviewer: Narahari Parhi (Bhubaneswar) MSC: 34B10 34B15 PDFBibTeX XMLCite \textit{L. Kong} and \textit{Q. Kong}, Commun. Appl. Nonlinear Anal. 14, No. 1, 93--111 (2007; Zbl 1140.34008)
Kong, Lingju; Kong, Qingkai Right-definite half-linear Sturm-Liouville problems. (English) Zbl 1131.34020 Proc. R. Soc. Edinb., Sect. A, Math. 137, No. 1, 77-92 (2007). MSC: 34B24 34B08 PDFBibTeX XMLCite \textit{L. Kong} and \textit{Q. Kong}, Proc. R. Soc. Edinb., Sect. A, Math. 137, No. 1, 77--92 (2007; Zbl 1131.34020) Full Text: DOI
Kong, Qingkai Nonoscillation and oscillation of second order half-linear differential equations. (English) Zbl 1123.34027 J. Math. Anal. Appl. 332, No. 1, 512-522 (2007). Reviewer: Jozef Dzurina (Kosice) MSC: 34C10 PDFBibTeX XMLCite \textit{Q. Kong}, J. Math. Anal. Appl. 332, No. 1, 512--522 (2007; Zbl 1123.34027) Full Text: DOI
Kong, Lingju; Kong, Qingkai Second-order boundary value problems with nonhomogeneous boundary conditions. II. (English) Zbl 1119.34009 J. Math. Anal. Appl. 330, No. 2, 1393-1411 (2007). MSC: 34B10 34B15 PDFBibTeX XMLCite \textit{L. Kong} and \textit{Q. Kong}, J. Math. Anal. Appl. 330, No. 2, 1393--1411 (2007; Zbl 1119.34009) Full Text: DOI
Kong, Qingkai Existence and nonexistence of solutions of second-order nonlinear boundary value problems. (English) Zbl 1119.34024 Nonlinear Anal., Theory Methods Appl., Ser. A, Theory Methods 66, No. 11, 2635-2651 (2007). MSC: 34B24 34B15 PDFBibTeX XMLCite \textit{Q. Kong}, Nonlinear Anal., Theory Methods Appl., Ser. A, Theory Methods 66, No. 11, 2635--2651 (2007; Zbl 1119.34024) Full Text: DOI
Graef, John R.; Kong, Lingju; Kong, Qingkai Symmetric positive solutions of nonlinear boundary value problems. (English) Zbl 1117.34024 J. Math. Anal. Appl. 326, No. 2, 1310-1327 (2007). Reviewer: Wei Nian Li (Binzhou) MSC: 34B18 34B15 34C15 PDFBibTeX XMLCite \textit{J. R. Graef} et al., J. Math. Anal. Appl. 326, No. 2, 1310--1327 (2007; Zbl 1117.34024) Full Text: DOI
Erbe, Lynn; Kong, Lingju; Kong, Qingkai A telescoping principle for oscillation of second order differential equations on a time scale. (English) Zbl 1156.34021 Rocky Mt. J. Math. 36, No. 1, 149-181 (2006). Reviewer: Stefan Hilger (Eichstätt) MSC: 34C10 39A10 PDFBibTeX XMLCite \textit{L. Erbe} et al., Rocky Mt. J. Math. 36, No. 1, 149--181 (2006; Zbl 1156.34021) Full Text: DOI Euclid
Del Medico, A.; Kong, Qingkai New Kamenev-type oscillation criteria for second-order differential equations on a measure chain. (English) Zbl 1085.39014 Comput. Math. Appl. 50, No. 8-9, 1211-1230 (2005). MSC: 39A12 34B05 39A11 PDFBibTeX XMLCite \textit{A. Del Medico} and \textit{Q. Kong}, Comput. Math. Appl. 50, No. 8--9, 1211--1230 (2005; Zbl 1085.39014) Full Text: DOI
Kong, Lingju; Kong, Qingkai Positive solutions of higher-order boundary-value problems. (English) Zbl 1084.34023 Proc. Edinb. Math. Soc., II. Ser. 48, No. 2, 445-464 (2005). Reviewer: Sergei A. Brykalov (Ekaterinburg) MSC: 34B18 34B16 34B15 PDFBibTeX XMLCite \textit{L. Kong} and \textit{Q. Kong}, Proc. Edinb. Math. Soc., II. Ser. 48, No. 2, 445--464 (2005; Zbl 1084.34023) Full Text: DOI
Kong, Lingju; Kong, Qingkai Second-order boundary value problems with nonhomogeneous boundary conditions. I. (English) Zbl 1060.34005 Math. Nachr. 278, No. 1-2, 173-193 (2005). MSC: 34B08 34B10 34B18 PDFBibTeX XMLCite \textit{L. Kong} and \textit{Q. Kong}, Math. Nachr. 278, No. 1--2, 173--193 (2005; Zbl 1060.34005) Full Text: DOI
Kong, Lingju; Kong, Qingkai A class of nonlinear boundary value problems of second-order ordinary differential equations. (English) Zbl 1084.34513 Ladde, G.S.(ed.) et al., Dynamic systems and applications. Volume 4. Proceedings of the 4th international conference, Morehouse College, Atlanta, GA, USA, May 21–24, 2003. Atlanta, GA: Dynamic Publishers (ISBN 1-890888-00-1/hbk). 465-471 (2004). Reviewer: Narahari Parhi (Bhubaneswar) MSC: 34B10 34A45 PDFBibTeX XMLCite \textit{L. Kong} and \textit{Q. Kong}, in: Dynamic systems and applications. Volume 4. Proceedings of the 4th international conference, Morehouse College, Atlanta, GA, USA, May 21--24, 2003. Atlanta, GA: Dynamic Publishers. 465--471 (2004; Zbl 1084.34513)
Kong, Lingju; Kong, Qingkai Multi-point boundary value problems of second-order differential equations. I. (English) Zbl 1066.34012 Nonlinear Anal., Theory Methods Appl., Ser. A, Theory Methods 58, No. 7-8, 909-931 (2004). Reviewer: Narahari Parhi (Bhubaneswar) MSC: 34B08 34B10 PDFBibTeX XMLCite \textit{L. Kong} and \textit{Q. Kong}, Nonlinear Anal., Theory Methods Appl., Ser. A, Theory Methods 58, No. 7--8, 909--931 (2004; Zbl 1066.34012) Full Text: DOI
Del Medico, Amy; Kong, Qingkai Kamenev-type and interval oscillation criteria for second-order linear differential equations on a measure chain. (English) Zbl 1056.34050 J. Math. Anal. Appl. 294, No. 2, 621-643 (2004). Reviewer: Christian Poetzsche (Minneapolis) MSC: 34C10 39A11 39A12 PDFBibTeX XMLCite \textit{A. Del Medico} and \textit{Q. Kong}, J. Math. Anal. Appl. 294, No. 2, 621--643 (2004; Zbl 1056.34050) Full Text: DOI
Kong, Q.; Wu, H.; Zettl, A.; Möller, M. Indefinite Sturm-Liouville problems. (English) Zbl 1056.34038 Proc. R. Soc. Edinb., Sect. A, Math. 133, No. 3, 639-652 (2003). Reviewer: Victor S. Rykhlov (Saratov) MSC: 34B24 34L05 34B09 47B50 47E05 PDFBibTeX XMLCite \textit{Q. Kong} et al., Proc. R. Soc. Edinb., Sect. A, Math. 133, No. 3, 639--652 (2003; Zbl 1056.34038) Full Text: DOI
Cao, Xifang; Kong, Qingkai; Wu, Hongyou; Zettl, Anton Sturm-Liouville problems whose leading coefficient function changes sign. (English) Zbl 1055.34051 Can. J. Math. 55, No. 4, 724-749 (2003). Reviewer: Vyacheslav Pivovarchik (Odessa) MSC: 34B24 34C10 34L05 34L15 34L20 PDFBibTeX XMLCite \textit{X. Cao} et al., Can. J. Math. 55, No. 4, 724--749 (2003; Zbl 1055.34051) Full Text: DOI
Kong, Lingju; Kong, Qingkai Positive solutions of nonlinear \(m\)-point boundary value problems on a measure chain. (English) Zbl 1037.34015 J. Difference Equ. Appl. 9, No. 1, 121-133 (2003); republished ibid. 9, No. 6, 615-627 (2003). Reviewer: Roman Hilscher (Brno) MSC: 34B15 30A99 PDFBibTeX XMLCite \textit{L. Kong} and \textit{Q. Kong}, J. Difference Equ. Appl. 9, No. 1, 121--133 (2003; Zbl 1037.34015) Full Text: DOI
Kong, Lingju; Kong, Qingkai Even order nonlinear eigenvalue problems on a measure chain. (English) Zbl 1024.34021 Nonlinear Anal., Theory Methods Appl., Ser. A, Theory Methods 52, No. 8, 1891-1909 (2003). MSC: 34B45 39A99 34L05 PDFBibTeX XMLCite \textit{L. Kong} and \textit{Q. Kong}, Nonlinear Anal., Theory Methods Appl., Ser. A, Theory Methods 52, No. 8, 1891--1909 (2003; Zbl 1024.34021) Full Text: DOI
Kong, Lingju; Kong, Qingkai; Zhang, Binggen Positive solutions of boundary value problems for third-order functional difference equations. (English) Zbl 1057.39014 Comput. Math. Appl. 44, No. 3-4, 481-489 (2002). MSC: 39A12 39A11 34B15 PDFBibTeX XMLCite \textit{L. Kong} et al., Comput. Math. Appl. 44, No. 3--4, 481--489 (2002; Zbl 1057.39014) Full Text: DOI
Kong, Qingkai Multiplicities of eigenvalues of a vector-valued Sturm-Liouville problem. (English) Zbl 1052.34032 Mathematika 49, No. 1-2, 119-127 (2002). Reviewer: Kazushi Yoshitomi (Tokyo) MSC: 34B24 34B05 34L05 PDFBibTeX XMLCite \textit{Q. Kong}, Mathematika 49, No. 1--2, 119--127 (2002; Zbl 1052.34032) Full Text: DOI
Kong, Q.; Wu, H.; Zettl, A. Left-definite Sturm-Liouville problems. (English) Zbl 1002.34016 J. Differ. Equations 177, No. 1, 1-26 (2001). Reviewer: Miloslav Znojil (Řež) MSC: 34B24 34L15 46C20 65L15 PDFBibTeX XMLCite \textit{Q. Kong} et al., J. Differ. Equations 177, No. 1, 1--26 (2001; Zbl 1002.34016) Full Text: DOI
Kong, Q.; Wu, H.; Zettl, A. Sturm-Liouville problems with finite spectrum. (English) Zbl 1001.34019 J. Math. Anal. Appl. 263, No. 2, 748-762 (2001). Reviewer: Vyacheslav Pivovarchik (Odessa) MSC: 34B24 34B40 34B09 PDFBibTeX XMLCite \textit{Q. Kong} et al., J. Math. Anal. Appl. 263, No. 2, 748--762 (2001; Zbl 1001.34019) Full Text: DOI
Kong, Qingkai Oscillation of second order matrix differential systems. (English) Zbl 0993.34034 Differ. Equ. Dyn. Syst. 8, No. 2, 99-110 (2000). Reviewer: Ondřej Došlý (Brno) MSC: 34C10 PDFBibTeX XMLCite \textit{Q. Kong}, Differ. Equ. Dyn. Syst. 8, No. 2, 99--110 (2000; Zbl 0993.34034)
Kong, Qingkai Stability of nonlinear ordinary differential systems. (English) Zbl 0963.34037 Bates, Peter W. (ed.) et al., Differential equations and computational simulations. Proceedings of the international conference, Chengdu, China, June 13-18, 1999. Singapore: World Scientific. 149-159 (2000). Reviewer: Ileana Toma (Bucureşti) MSC: 34D20 PDFBibTeX XMLCite \textit{Q. Kong}, in: Differential equations and computational simulations. Proceedings of the international conference, Chengdu, China, June 13--18, 1999. Singapore: World Scientific. 149--159 (2000; Zbl 0963.34037)
Kong, Q.; Wu, H.; Zettl, A. Geometric aspects of Sturm-Liouville problems. I: Structures on spaces of boundary conditions. (English) Zbl 0957.34024 Proc. R. Soc. Edinb., Sect. A, Math. 130, No. 3, 561-589 (2000). Reviewer: Vyacheslav Pivovarchik (Odessa) MSC: 34B24 34B08 34B09 34L15 PDFBibTeX XMLCite \textit{Q. Kong} et al., Proc. R. Soc. Edinb., Sect. A, Math. 130, No. 3, 561--589 (2000; Zbl 0957.34024)
Kong, Qingkai Interval criteria for oscillation of second-order linear ordinary differential equations. (English) Zbl 0924.34026 J. Math. Anal. Appl. 229, No. 1, 258-270 (1999). Reviewer: Zuzana Došlá (Brno) MSC: 34C10 PDFBibTeX XMLCite \textit{Q. Kong}, J. Math. Anal. Appl. 229, No. 1, 258--270 (1999; Zbl 0924.34026) Full Text: DOI
Kong, Qingkai Oscillation criteria for second order half-linear differential equations. (English) Zbl 0924.34025 Ruan, Shigui (ed.) et al., Differential equations with applications to biology. Proceedings of the international conference, Halifax, Canada, July 25–29, 1997. Providence, RI: American Mathematical Society. Fields Inst. Commun. 21, 317-323 (1999). Reviewer: Zuzana Došlá (Brno) MSC: 34C10 PDFBibTeX XMLCite \textit{Q. Kong}, Fields Inst. Commun. 21, 317--323 (1999; Zbl 0924.34025)
Kong, Qingkai Oscillation results for linear differential systems of second order. (English) Zbl 0927.34020 Can. Appl. Math. Q. 6, No. 2, 157-172 (1998). Reviewer: P.Smith (Keele) MSC: 34C10 PDFBibTeX XMLCite \textit{Q. Kong}, Can. Appl. Math. Q. 6, No. 2, 157--172 (1998; Zbl 0927.34020)
Kong, Qingkai Oscillation for systems of functional differential equations. (English) Zbl 0863.34072 J. Math. Anal. Appl. 198, No. 2, 608-619 (1996). Reviewer: R.G.Koplatadze (Tbilisi) MSC: 34K11 34C10 PDFBibTeX XMLCite \textit{Q. Kong}, J. Math. Anal. Appl. 198, No. 2, 608--619 (1996; Zbl 0863.34072) Full Text: DOI
Erbe, L.; Kong, Qingkai Some necessary and sufficient conditions for oscillation of neutral differential equations. (English) Zbl 0872.34046 Appl. Anal. 60, No. 1-2, 133-148 (1996). MSC: 34K11 34C10 PDFBibTeX XMLCite \textit{L. Erbe} and \textit{Q. Kong}, Appl. Anal. 60, No. 1--2, 133--148 (1996; Zbl 0872.34046) Full Text: DOI
Kong, Qingkai; Liao, Xiaoxin Dissipation, boundedness and persistence of general ecological systems. (English) Zbl 0837.92025 Nonlinear Anal., Theory Methods Appl. 25, No. 11, 1237-1250 (1995). MSC: 92D40 34D20 PDFBibTeX XMLCite \textit{Q. Kong} and \textit{X. Liao}, Nonlinear Anal., Theory Methods Appl. 25, No. 11, 1237--1250 (1995; Zbl 0837.92025) Full Text: DOI
Harris, B. J.; Kong, Q. On the oscillation of differential equations with an oscillatory coefficient. (English) Zbl 0829.34025 Trans. Am. Math. Soc. 347, No. 5, 1831-1839 (1995). Reviewer: O.Došlý (Brno) MSC: 34C10 PDFBibTeX XMLCite \textit{B. J. Harris} and \textit{Q. Kong}, Trans. Am. Math. Soc. 347, No. 5, 1831--1839 (1995; Zbl 0829.34025) Full Text: DOI
Kong, Q.; Zettl, A. Interval oscillation conditions for difference equations. (English) Zbl 0828.39002 SIAM J. Math. Anal. 26, No. 4, 1047-1060 (1995). Reviewer: B.M.Agrawal (Lashkar-Gwalior) MSC: 39A10 39A12 34B05 PDFBibTeX XMLCite \textit{Q. Kong} and \textit{A. Zettl}, SIAM J. Math. Anal. 26, No. 4, 1047--1060 (1995; Zbl 0828.39002) Full Text: DOI
Erbe, L. H.; Kong, Qingkai; Zhang, B. G. Oscillation theory for functional differential equations. (English) Zbl 0821.34067 Pure and Applied Mathematics, Marcel Dekker. 190. New York: Marcel Dekker, Inc. vii, 496 p. (1994). Reviewer: P.Marušiak (Žilina) MSC: 34K99 34-02 34C10 34K40 PDFBibTeX XMLCite \textit{L. H. Erbe} et al., Oscillation theory for functional differential equations. New York: Marcel Dekker, Inc. (1994; Zbl 0821.34067)
Erbe, L.; Kong, Qingkai Explicit conditions for oscillation of neutral differential systems. (English) Zbl 0811.34053 Hiroshima Math. J. 24, No. 2, 317-329 (1994). Reviewer: W.M.Oliva (Lisboa) MSC: 34K99 34K40 34C10 PDFBibTeX XMLCite \textit{L. Erbe} and \textit{Q. Kong}, Hiroshima Math. J. 24, No. 2, 317--329 (1994; Zbl 0811.34053)
Erbe, L. H.; Kong, Qingkai Oscillation and nonoscillation properties of neutral differential equations. (English) Zbl 0797.34072 Can. J. Math. 46, No. 2, 284-297 (1994). MSC: 34K99 34K40 34C10 PDFBibTeX XMLCite \textit{L. H. Erbe} and \textit{Q. Kong}, Can. J. Math. 46, No. 2, 284--297 (1994; Zbl 0797.34072) Full Text: DOI
Kong, Qingkai; Binggen, Zhang Oscillation of a forced second order nonlinear equation. (English) Zbl 0798.34042 Chin. Ann. Math., Ser. B 15, No. 1, 59-68 (1994). Reviewer: Charles A.Swanson (Vancouver) MSC: 34C10 PDFBibTeX XMLCite \textit{Q. Kong} and \textit{Z. Binggen}, Chin. Ann. Math., Ser. B 15, No. 1, 59--68 (1994; Zbl 0798.34042)
Kong, Q.; Zettl, Anton Linear ordinary differential equations. (English) Zbl 0886.34007 Agarwal, R. P. (ed.), Inequalities and applications. Dedicated to Wolfgang Walter’s 66th birthday with a tribute by R. M. Redheffer. Singapore: World Scientific. World Sci. Ser. Appl. Anal. 3, 381-397 (1994). MSC: 34A30 34-01 PDFBibTeX XMLCite \textit{Q. Kong} and \textit{A. Zettl}, World Sci. Ser. Appl. Anal. 3, 381--397 (1994; Zbl 0886.34007)
Kong, Qingkai; Freedman, H. I. Single species models with monotonic and oscillatory carrying capacities. (English) Zbl 0794.92016 Far East J. Math. Sci. 1, No. 1, 35-43 (1993). MSC: 92D25 34E99 34C27 34C25 PDFBibTeX XMLCite \textit{Q. Kong} and \textit{H. I. Freedman}, Far East J. Math. Sci. 1, No. 1, 35--43 (1993; Zbl 0794.92016)
Kong, Qingkai; Freedman, H. I. Oscillations in delay differential systems. (English) Zbl 0780.34049 Differ. Integral Equ. 6, No. 6, 1325-1336 (1993). MSC: 34K99 34C10 92D25 PDFBibTeX XMLCite \textit{Q. Kong} and \textit{H. I. Freedman}, Differ. Integral Equ. 6, No. 6, 1325--1336 (1993; Zbl 0780.34049)