Edit Profile Zhang, Weipeng Compute Distance To: Compute Author ID: zhang.weipeng Published as: Zhang, W.; Zhang, W. P.; Zhang, Weipeng Documents Indexed: 80 Publications since 1986, including 1 Book all top 5 Co-Authors 0 single-authored 7 Zhu, Deming 6 Fan, Meng 4 Bi, Ping 4 Deng, Guifeng 4 Gao, Yixian 4 Lu, Qiuying 4 Ye, Dan 2 Geng, Fengjie 2 Huang, Jicai 2 Liu, Dan 2 Zhou, Tingting 1 Bai, Xue 1 Chang, Jing 1 Chen, Jing 1 Gong, Yijun 1 Han, Maoan 1 Ji, Shuguan 1 Li, Ronghua 1 Li, Xianyi 1 Li, Xiaodong 1 Li, Zhenjun 1 Liu, Fuyao 1 Liu, Yuhong 1 Liu, Zhehua 1 Mao, Rui 1 Qiao, Shaojie 1 Tang, Yuanyan 1 Wang, Ke 1 Xiao, Yanju 1 Xu, Fei 1 Xu, Fei 1 Yang, Jianwei 1 Yin, Lan 1 Yin, Weishi 1 Zhao, Junfang all top 5 Serials 3 Abstract and Applied Analysis 2 Mathematical and Computer Modelling 2 Journal of Natural Science of Heilongjiang University 2 Dynamic Systems and Applications 2 International Journal of Bifurcation and Chaos in Applied Sciences and Engineering 2 Advances in Mathematical Physics 1 Indian Journal of Pure & Applied Mathematics 1 Chaos, Solitons and Fractals 1 Applied Mathematics and Computation 1 Acta Mathematicae Applicatae Sinica 1 Chinese Annals of Mathematics. Series A 1 Annals of Differential Equations 1 Applied Mathematics Letters 1 Journal of Dynamics and Differential Equations 1 Mathematical Problems in Engineering 1 ZAMM. Zeitschrift für Angewandte Mathematik und Mechanik 1 Chinese Quarterly Journal of Mathematics 1 Nonlinear Analysis. Real World Applications 1 Discrete and Continuous Dynamical Systems. Series B 1 Journal of Software 1 Acta Mathematica Sinica. Chinese Series 1 Mathematical Modelling of Natural Phenomena 1 Chinese Journal of Engineering Mathematics all top 5 Fields 22 Ordinary differential equations (34-XX) 14 Biology and other natural sciences (92-XX) 7 Dynamical systems and ergodic theory (37-XX) 5 Partial differential equations (35-XX) 4 Difference and functional equations (39-XX) 1 Harmonic analysis on Euclidean spaces (42-XX) 1 Integral equations (45-XX) 1 Operator theory (47-XX) 1 Statistics (62-XX) 1 Numerical analysis (65-XX) 1 Computer science (68-XX) 1 Game theory, economics, finance, and other social and behavioral sciences (91-XX) Publications by Year all cited Publications top 5 cited Publications Citations contained in zbMATH 39 Publications have been cited 188 times in 180 Documents Cited by ▼ Year ▼ Periodicity in a generalized ecological competition system governed by impulsive differential equations with delays. Zbl 1065.92066Zhang, Weipeng; Fan, Meng 55 2004 Multiple positive periodic solutions of a delayed discrete predator-prey system with type IV functional responses. Zbl 1142.39015Zhang, Weipeng; Zhu, Deming; Bi, Ping 22 2007 Existence of periodic solutions of a scalar functional differential equation via a fixed point theorem. Zbl 1145.34041Zhang, Weipeng; Zhu, Deming; Bi, Ping 12 2007 Large-eddy simulation of flow over a cylinder with \(Re_{D}\) from \(3.9\times 10^{3}\) to \(8.5\times 10^{5}\): a skin-friction perspective. Zbl 1383.76280Cheng, Wan; Pullin, D. I.; Samtaney, R.; Zhang, W.; Gao, Wei 8 2017 An explicit Chebyshev pseudospectral multigrid method for incompressible Navier-Stokes equations. Zbl 1242.76224Zhang, W.; Zhang, C. H.; Xi, G. 8 2010 Periodicity in a ratio-dependent predator-prey system with stage-structured predator on time scales. Zbl 1142.34025Zhang, Weipeng; Bi, Ping; Zhu, Deming 8 2008 Social influencing and associated random walk models: asymptotic consensus times on the complete graph. Zbl 1317.91007Zhang, W.; Lim, C.; Sreenivasan, S.; Xie, J.; Szymanski, B. K.; Korniss, G. 7 2011 Rate of convergence of multistep codes started by variation of order and stepsize. Zbl 0727.65067Shampine, L. F.; Zhang, W. 7 1990 Construction of analytic solution for time-fractional Boussinesq equation using iterative method. Zbl 1375.35617Xu, Fei; Gao, Yixian; Zhang, Weipeng 5 2015 Bifurcation analysis of an SIS epidemic model with saturated incidence rate and saturated treatment function. Zbl 1354.92101Zhou, Tingting; Zhang, Weipeng; Lu, Qiuying 4 2014 Complex dynamics in predator-prey models with nonmonotonic functional response and harvesting. Zbl 1307.34068Huang, J.; Chen, J.; Gong, Y.; Zhang, W. 4 2013 Codimension 2 bifurcations of double homoclinic loops. Zbl 1197.37065Zhang, Weipeng; Zhu, Deming 4 2009 Effects of axial compression ratio of central columns on seismic performance of a multi-story underground structure. Zbl 1359.74304Chen, Zhi Yi; Chen, Wei; Zhang, W.; Lou, M. L. 3 2016 Quasi-periodic solutions of nonlinear wave equation with \(x\)-dependent coefficients. Zbl 1314.35007Gao, Yixian; Zhang, Weipeng; Ji, Shuguan 3 2015 Dynamic stability of a flexible spinning cylinder partially filled with liquid. Zbl 1110.74702Tao, M.; Zhang, W. 3 2002 An elastic-plastic-cracking model for finite element analysis of indentation cracking in brittle materials. Zbl 1001.74108Zhang, W.; Subhash, G. 3 2001 Post-buckling analysis of shell and membrane structures by dynamic relaxation method. Zbl 0988.74071Zhang, W.; Hisada, T.; Noguchi, H. 3 2000 Free vibration of rotating pretwisted functionally graded composite cylindrical panel reinforced with graphene platelets. Zbl 07111012Niu, Y.; Zhang, W.; Guo, X. Y. 2 2019 Patchy, not patchy, or how much patchy? Classification of spatial patterns appearing in a model of biological invasion. Zbl 1384.92052Petrovskaya, N.; Zhang, W. 2 2017 Asymptotic expansion of the solutions to time-space fractional Kuramoto-Sivashinsky equations. Zbl 1361.35203Yin, Weishi; Xu, Fei; Zhang, Weipeng; Gao, Yixian 2 2016 A linearized and incompressible constitutive model for arteries. Zbl 1397.92060Liu, Y.; Zhang, W.; Wang, C.; Kassab, Ghassan S. 2 2011 Numerical study of liquid film cooling in a rocket combustion chamber. Zbl 1189.76072Zhang, H. W.; Tao, W. Q.; He, Y. L.; Zhang, W. 2 2006 Periodic solutions of density dependent predator-prey systems with Holling type 2 functional response and infinite delays. Zbl 1067.34074Ye, Dan; Fan, Meng; Zhang, Weipeng 2 2005 Periodicity of a class of mathematical models arising in bioeconomics. Zbl 1071.34040Zhang, Weipeng; Fan, Meng; Ye, Dan 2 2004 Coexistence of bistable multi-pulse chaotic motions with large amplitude vibrations in buckled sandwich plate under transverse and in-plane excitations. Zbl 1437.74008Zhang, W.; Wu, Q. L.; Zhang, Y. F.; Zheng, Y. 1 2020 Instabilities in a combustion model with two free interfaces. Zbl 1429.35212Addona, D.; Brauner, C.-M.; Lorenzi, L.; Zhang, W. 1 2020 Free vibration of rotating cantilever pre-twisted panel with initial exponential function type geometric imperfection. Zbl 07183470Gu, X. J.; Hao, Y. X.; Zhang, W.; Liu, L. T.; Chen, Jie 1 2019 An analytical consideration of steady-state forced convection within a nanofluid-saturated metal foam. Zbl 1337.76060Zhang, W.; Li, W.; Nakayama, A. 1 2015 Permanence, global asymptotic stability and almost periodic solutions in a non-autonomous predator-prey system with Hassell-Varley type functional response. Zbl 1302.34073Zhang, Weipeng; Yin, Lan; Li, Xianyi 1 2013 Computation of Lyapunov values for two planar polynomial differential systems. Zbl 1173.34024Li, Jing; Chen, Y.; Zhang, W.; Tian, Y. 1 2008 Codimension 3 nontwisted double homoclinic loops bifurcations with resonant eigenvalues. Zbl 1195.34058Zhang, Weipeng; Zhu, Deming; Liu, Dan 1 2008 The ant colony algorithm for feature selection in high-dimension gene expression data for disease classification. Zbl 1146.92318Robbins, K. R.; Zhang, W.; Bertrand, J. K.; Rekaya, R. 1 2007 Asymptotic fields around an interfacial crack with a cohesive zone ahead of the crack tip. Zbl 1120.74505Zhang, W.; Deng, X. 1 2006 Existence of nontrivial positive periodic solution of a predator-prey system with Holing type II functional response. Zbl 1083.34522Ye, Dan; Fan, Meng; Zhang, Weipeng 1 2004 Dynamic stability of a rotor partially filled with a viscous liquid. Zbl 1110.74701Tao, M.; Zhang, W. 1 2002 An integrated intelligent approach to process diagnosis in process industries. Zbl 0949.90559Jiao, J.; Zhang, W.; Zhao, Zhenyin; Cha, J. 1 1999 Response of an sdof system to periodic external and parametric excitations with random phase modulations. Zbl 1232.70038Dimentberg, M.; Hou, Z.; Noori, M.; Zhang, W. 1 1996 Efficient integration of ordinary differential equations by transformation. Zbl 0686.65035Shampine, L. F.; Zhang, W. 1 1988 Dynamic stability of the rotating shaft made of Boltzmann viscoelastic solid. Zbl 0588.73090Zhang, W.; Ling, F. H. 1 1986 Coexistence of bistable multi-pulse chaotic motions with large amplitude vibrations in buckled sandwich plate under transverse and in-plane excitations. Zbl 1437.74008Zhang, W.; Wu, Q. L.; Zhang, Y. F.; Zheng, Y. 1 2020 Instabilities in a combustion model with two free interfaces. Zbl 1429.35212Addona, D.; Brauner, C.-M.; Lorenzi, L.; Zhang, W. 1 2020 Free vibration of rotating pretwisted functionally graded composite cylindrical panel reinforced with graphene platelets. Zbl 07111012Niu, Y.; Zhang, W.; Guo, X. Y. 2 2019 Free vibration of rotating cantilever pre-twisted panel with initial exponential function type geometric imperfection. Zbl 07183470Gu, X. J.; Hao, Y. X.; Zhang, W.; Liu, L. T.; Chen, Jie 1 2019 Large-eddy simulation of flow over a cylinder with \(Re_{D}\) from \(3.9\times 10^{3}\) to \(8.5\times 10^{5}\): a skin-friction perspective. Zbl 1383.76280Cheng, Wan; Pullin, D. I.; Samtaney, R.; Zhang, W.; Gao, Wei 8 2017 Patchy, not patchy, or how much patchy? Classification of spatial patterns appearing in a model of biological invasion. Zbl 1384.92052Petrovskaya, N.; Zhang, W. 2 2017 Effects of axial compression ratio of central columns on seismic performance of a multi-story underground structure. Zbl 1359.74304Chen, Zhi Yi; Chen, Wei; Zhang, W.; Lou, M. L. 3 2016 Asymptotic expansion of the solutions to time-space fractional Kuramoto-Sivashinsky equations. Zbl 1361.35203Yin, Weishi; Xu, Fei; Zhang, Weipeng; Gao, Yixian 2 2016 Construction of analytic solution for time-fractional Boussinesq equation using iterative method. Zbl 1375.35617Xu, Fei; Gao, Yixian; Zhang, Weipeng 5 2015 Quasi-periodic solutions of nonlinear wave equation with \(x\)-dependent coefficients. Zbl 1314.35007Gao, Yixian; Zhang, Weipeng; Ji, Shuguan 3 2015 An analytical consideration of steady-state forced convection within a nanofluid-saturated metal foam. Zbl 1337.76060Zhang, W.; Li, W.; Nakayama, A. 1 2015 Bifurcation analysis of an SIS epidemic model with saturated incidence rate and saturated treatment function. Zbl 1354.92101Zhou, Tingting; Zhang, Weipeng; Lu, Qiuying 4 2014 Complex dynamics in predator-prey models with nonmonotonic functional response and harvesting. Zbl 1307.34068Huang, J.; Chen, J.; Gong, Y.; Zhang, W. 4 2013 Permanence, global asymptotic stability and almost periodic solutions in a non-autonomous predator-prey system with Hassell-Varley type functional response. Zbl 1302.34073Zhang, Weipeng; Yin, Lan; Li, Xianyi 1 2013 Social influencing and associated random walk models: asymptotic consensus times on the complete graph. Zbl 1317.91007Zhang, W.; Lim, C.; Sreenivasan, S.; Xie, J.; Szymanski, B. K.; Korniss, G. 7 2011 A linearized and incompressible constitutive model for arteries. Zbl 1397.92060Liu, Y.; Zhang, W.; Wang, C.; Kassab, Ghassan S. 2 2011 An explicit Chebyshev pseudospectral multigrid method for incompressible Navier-Stokes equations. Zbl 1242.76224Zhang, W.; Zhang, C. H.; Xi, G. 8 2010 Codimension 2 bifurcations of double homoclinic loops. Zbl 1197.37065Zhang, Weipeng; Zhu, Deming 4 2009 Periodicity in a ratio-dependent predator-prey system with stage-structured predator on time scales. Zbl 1142.34025Zhang, Weipeng; Bi, Ping; Zhu, Deming 8 2008 Computation of Lyapunov values for two planar polynomial differential systems. Zbl 1173.34024Li, Jing; Chen, Y.; Zhang, W.; Tian, Y. 1 2008 Codimension 3 nontwisted double homoclinic loops bifurcations with resonant eigenvalues. Zbl 1195.34058Zhang, Weipeng; Zhu, Deming; Liu, Dan 1 2008 Multiple positive periodic solutions of a delayed discrete predator-prey system with type IV functional responses. Zbl 1142.39015Zhang, Weipeng; Zhu, Deming; Bi, Ping 22 2007 Existence of periodic solutions of a scalar functional differential equation via a fixed point theorem. Zbl 1145.34041Zhang, Weipeng; Zhu, Deming; Bi, Ping 12 2007 The ant colony algorithm for feature selection in high-dimension gene expression data for disease classification. Zbl 1146.92318Robbins, K. R.; Zhang, W.; Bertrand, J. K.; Rekaya, R. 1 2007 Numerical study of liquid film cooling in a rocket combustion chamber. Zbl 1189.76072Zhang, H. W.; Tao, W. Q.; He, Y. L.; Zhang, W. 2 2006 Asymptotic fields around an interfacial crack with a cohesive zone ahead of the crack tip. Zbl 1120.74505Zhang, W.; Deng, X. 1 2006 Periodic solutions of density dependent predator-prey systems with Holling type 2 functional response and infinite delays. Zbl 1067.34074Ye, Dan; Fan, Meng; Zhang, Weipeng 2 2005 Periodicity in a generalized ecological competition system governed by impulsive differential equations with delays. Zbl 1065.92066Zhang, Weipeng; Fan, Meng 55 2004 Periodicity of a class of mathematical models arising in bioeconomics. Zbl 1071.34040Zhang, Weipeng; Fan, Meng; Ye, Dan 2 2004 Existence of nontrivial positive periodic solution of a predator-prey system with Holing type II functional response. Zbl 1083.34522Ye, Dan; Fan, Meng; Zhang, Weipeng 1 2004 Dynamic stability of a flexible spinning cylinder partially filled with liquid. Zbl 1110.74702Tao, M.; Zhang, W. 3 2002 Dynamic stability of a rotor partially filled with a viscous liquid. Zbl 1110.74701Tao, M.; Zhang, W. 1 2002 An elastic-plastic-cracking model for finite element analysis of indentation cracking in brittle materials. Zbl 1001.74108Zhang, W.; Subhash, G. 3 2001 Post-buckling analysis of shell and membrane structures by dynamic relaxation method. Zbl 0988.74071Zhang, W.; Hisada, T.; Noguchi, H. 3 2000 An integrated intelligent approach to process diagnosis in process industries. Zbl 0949.90559Jiao, J.; Zhang, W.; Zhao, Zhenyin; Cha, J. 1 1999 Response of an sdof system to periodic external and parametric excitations with random phase modulations. Zbl 1232.70038Dimentberg, M.; Hou, Z.; Noori, M.; Zhang, W. 1 1996 Rate of convergence of multistep codes started by variation of order and stepsize. Zbl 0727.65067Shampine, L. F.; Zhang, W. 7 1990 Efficient integration of ordinary differential equations by transformation. Zbl 0686.65035Shampine, L. F.; Zhang, W. 1 1988 Dynamic stability of the rotating shaft made of Boltzmann viscoelastic solid. Zbl 0588.73090Zhang, W.; Ling, F. H. 1 1986 all cited Publications top 5 cited Publications all top 5 Cited by 353 Authors 10 Xu, Changjin 8 Nieto Roig, Juan Jose 6 Alzabut, Jehad O. 6 Samtaney, Ravi 5 Cheng, Wan 5 Padhi, Seshadev 4 Chen, Lansun 4 Ge, Weigao 4 Jiang, Daqing 4 Li, Xiaoyue 4 Li, Yongkun 4 Pullin, Dale I. 4 Wu, Yusen 4 Zhang, Xiaoying 3 Dai, Binxiang 3 Gao, Yixian 3 Ikhile, Monday Ndidi Oziegbe 3 Li, Peiluan 3 Liu, Yuji 3 Luo, Zhenguo 3 Pati, Smita 3 Srivastava, Shilpee 3 Stamov, Gani Trendafilov 3 Tian, Yu 3 Wang, Qi 2 Ahmad, Bashir 2 Amster, Pablo 2 Fang, Hui 2 Fialho, João F. 2 Firouz-Abadi, R. D. 2 Huang, Jicai 2 Ikhile, M. N. O. 2 Lan, Hengyou 2 Li, Wenjin 2 Liu, Zhijun 2 Lu, Lin 2 Lu, Qiuying 2 Luo, Liping 2 Luo, Zhiguo 2 Mackerle, Jaroslav 2 Minhós, Feliz Manuel 2 O’Regan, Donal 2 Otunta, F. O. 2 Pang, Yanni 2 Petrovskaya, Natalia B. 2 Rodríguez-López, Rosana 2 Saker, Samir H. 2 Shao, Yuanfu 2 Siraj-ul-Islam 2 Teng, Zhi-dong 2 Wang, Dongshu 2 Wang, Ke 2 Xia, Yonghui 2 Zhang, Qiaoling 2 Zhang, Wei 2 Zhang, Weipeng 2 Zhang, Wenxin 2 Zhang, Yi 1 Abbasbandy, Saeid 1 Abdeljawad, Thabet 1 Agbanusi, Ikemefuna Chukwuemeka 1 Aïd, René 1 Akhmet, Marat Ubaydulla 1 Algaba, Antonio 1 Allahviranloo, Tofigh 1 Allery, Cyrille 1 Al-saedi, Ahmed Eid Salem 1 Ammar, Amine 1 An, Xinlei 1 Araki, Luciano Kiyoshi 1 Arthi, Ganesan 1 Asif, Naseer Ahmad 1 Atanasov, P. 1 Aziz, Imran 1 Babaei, Behnam 1 Baghani, Mostafa 1 Bai, Chuanzhi 1 Balachandran, Krishnan 1 Balderrama, Rocio 1 Bauch, Chris T. 1 Bera, P. K. 1 Bhattacharyya, Samit 1 Blackburn, Hugh M. 1 Bobryk, Roman V. 1 Brauner, Claude-Michel 1 Bravo de la Parra, Rafael 1 Bronski, Jared C. 1 Bujalski, Julia 1 Cao, Hongjun 1 Cao, Qingjie 1 Cao, Yong 1 Cardinali, Tiziana 1 Carpenter, Harry J. 1 Carpinteri, Alberto 1 Chang, Yingxiang 1 Chen, Bochao 1 Chen, Daxue 1 Chen, Guangye 1 Chen, Hexin 1 Chen, Jiangbin ...and 253 more Authors all top 5 Cited in 73 Serials 12 Applied Mathematics and Computation 11 Nonlinear Analysis. Theory, Methods & Applications. Series A: Theory and Methods 10 Computers & Mathematics with Applications 8 Applied Mathematical Modelling 8 Discrete Dynamics in Nature and Society 7 Journal of Fluid Mechanics 7 Nonlinear Analysis. Real World Applications 6 Journal of Mathematical Analysis and Applications 6 Journal of Applied Mathematics and Computing 5 Journal of Computational and Applied Mathematics 5 Abstract and Applied Analysis 4 Chaos, Solitons and Fractals 3 Computers and Fluids 3 International Journal of Bifurcation and Chaos in Applied Sciences and Engineering 3 Engineering Computations 3 Journal of Applied Mathematics 3 International Journal of Computational Methods 3 Advances in Difference Equations 3 Boundary Value Problems 3 Nonlinear Analysis. Hybrid Systems 3 Journal of Theoretical Biology 2 Physics Reports 2 Rocky Mountain Journal of Mathematics 2 Applied Mathematics Letters 2 International Journal of Computer Mathematics 2 Engineering Analysis with Boundary Elements 2 Taiwanese Journal of Mathematics 2 International Journal of Biomathematics 2 Advances in Mathematical Physics 2 International Journal of Differential Equations 2 International Journal of Structural Stability and Dynamics 1 Applicable Analysis 1 International Journal of Engineering Science 1 Indian Journal of Pure & Applied Mathematics 1 Journal of the Franklin Institute 1 Mathematical Methods in the Applied Sciences 1 Physica A 1 Glasgow Mathematical Journal 1 International Journal of Mathematics and Mathematical Sciences 1 Ricerche di Matematica 1 Applied Mathematics and Mechanics. (English Edition) 1 International Journal of Production Research 1 Annales de l’Institut Henri Poincaré. Analyse Non Linéaire 1 Computers & Operations Research 1 Mathematical and Computer Modelling 1 International Journal of Mathematics 1 Applications of Mathematics 1 Journal of Elasticity 1 SIAM Journal on Applied Mathematics 1 Proceedings of the Indian Academy of Sciences. Mathematical Sciences 1 NoDEA. Nonlinear Differential Equations and Applications 1 Mathematical Problems in Engineering 1 European Journal of Control 1 Differential Equations and Dynamical Systems 1 Chaos 1 Communications in Nonlinear Science and Numerical Simulation 1 Journal of Dynamical and Control Systems 1 International Journal of Nonlinear Sciences and Numerical Simulation 1 The ANZIAM Journal 1 Dynamics of Continuous, Discrete & Impulsive Systems. Series A. Mathematical Analysis 1 Advances in Complex Systems 1 Communications on Pure and Applied Analysis 1 Fuzzy Optimization and Decision Making 1 International Journal of Fracture 1 Nonlinear Oscillations 1 Mathematical Modelling of Natural Phenomena 1 International Journal for Computational Methods in Engineering Science and Mechanics 1 Journal of Nonlinear Science and Applications 1 Afrika Matematika 1 Axioms 1 Mathematics 1 Open Mathematics 1 Philosophical Transactions of the Royal Society of London. A. Mathematical, Physical and Engineering Sciences all top 5 Cited in 24 Fields 109 Ordinary differential equations (34-XX) 60 Biology and other natural sciences (92-XX) 25 Operator theory (47-XX) 20 Dynamical systems and ergodic theory (37-XX) 19 Numerical analysis (65-XX) 19 Fluid mechanics (76-XX) 17 Mechanics of deformable solids (74-XX) 13 Partial differential equations (35-XX) 8 Integral equations (45-XX) 8 Game theory, economics, finance, and other social and behavioral sciences (91-XX) 6 Difference and functional equations (39-XX) 6 Systems theory; control (93-XX) 4 Global analysis, analysis on manifolds (58-XX) 4 Mechanics of particles and systems (70-XX) 4 Classical thermodynamics, heat transfer (80-XX) 2 Functional analysis (46-XX) 2 Statistics (62-XX) 1 General and overarching topics; collections (00-XX) 1 Combinatorics (05-XX) 1 Algebraic topology (55-XX) 1 Probability theory and stochastic processes (60-XX) 1 Optics, electromagnetic theory (78-XX) 1 Geophysics (86-XX) 1 Operations research, mathematical programming (90-XX) Citations by Year