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.

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.

S. Zhang and W. Ma, Global stability of a Hopfield neural network with multiple time delays, J. Biomath., 23(2008), 1-10..

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..

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..

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.

Y. Takeuchi and W. Ma, Delayed SIR Epidemic Models for Vector Diseases, Mathematics for Life Science and Medicine, Springer, 2007, 51-65..

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..

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..

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..