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[41] Z. Hu, Y. Yu and W. Ma, The analysis of two epidemic models with constant immigration and quarantine, Rocky Mountain J. Math., 38(2008), 1421-1436.
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[42] S. Zhang, W. Ma and Y. Kuang, Necessary and sufficient conditions for global attractivity of Hopfield type neural networks with time delays, Rocky Mountain J. Math., 38(2008), 1829-1840.
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[43] S. Zhang and W. Ma, Global stability of a Hopfield neural network with multiple time delays, J. Biomath., 23(2008), 1-10..
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[44] Y. Yamaguchi, Y. Takeuchi and W. Ma, Dynamical Properties of a Stage Structure Three- species Model with Intra-guild Predation, J. Compt. Appl. Math., 201(2007), 327-338..
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[45] M. Song, W. Ma and Y. Takeuchi, Permanence of a Delayed SIR Epidemic Model with Density Dependent Birth Rate, J. Compt. Appl. Math., 201(2007), 389-394..
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[46] Dan Li and W. Ma, Asymptotic Properties of a HIV-1 Infection Model with Time Delay, J. Math. Anal. Appl., 335 (2007), 683–691. ESI高被引论文.
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[47] Y. Takeuchi and W. Ma, Delayed SIR Epidemic Models for Vector Diseases, Mathematics for Life Science and Medicine, Springer, 2007, 51-65..
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[48] G. Fu and W. Ma, Hopf bifurcations of a variable yield chemostat model with inhibitory exponential substrate uptake, Chaos, Solitons and Fractals, 30 (2006), 845–850..
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[49] H. Shi and W. Ma, An improved model of T cell development in the thymus and its stability analysis , Math. Biosci. Eng., 3(2006), 237-248..
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[50] M. Song, W. Ma, and Y. Takeuchi, Asymptotic properties of a revised SIR epidemic model with density dependent birth rate and time delay, Dyn. Contin. Discrete Impul. Syst., 13 (2006), 199-208..
