T. Wang, Z. Hu, F. Liao and W. Ma, Global stability analysis for delayed virus infection model with general incidence rate and humoral immunity, Math. Compt. Simul., 89 (2013), 13–22..

S. Zhou, Z. Hu, W. Ma and F. Liao, Dynamics Analysis of an HIV Infection Model including Infected Cells in an Eclipse Stage, J. Appl. Math., Volume 2013, Article ID 419593, 12 pages..

Q. Dong, W. Ma and M. Sun, The asymptotic behavior of a Chemostat model with Crowley – Martin type functional response and time delays, J. Math. Chem., 51 (2013), 1231–1248..

Q. Dong and W. Ma, Qualitative analysis of the Chemostat model with variable yield and a time delay, J. Math. Chem., 51(2013), 1274–1292..

Z. Hu, W. M and S. Ruan, Analysis of SIR epidemic models with nonlinear incidence rate and treatment, Math. Biosci., 238 (2012), 12–20..

Y. Dong and W. Ma, Global properties for a class of latent HIV infection dynamics model with CTL immune response, Int. J. Wavelets Multiresolut. Inf. Process., 10 (2012), 1250045(19 pages)..

Y. Liu, W. Ma and Magdi S. Mahmoud, New results for global exponential stability of neural networks with varying delays, Neurocomputing, 97(2012), 357-363..

L. Chen and W. Ma, A nonlinear delay model describing the growth of tumor cells under immune surveillance against cancer and its stability analysis, Int. J. Biomath., 5(2012), 1260017 (13 pages)..

X. Liu, H. Wang, Z. Hu and W. Ma, Global stability of an HIV pathogenesis model with cure rate, Nonl. Anal. RWA, 12 (2011), 2947–2961..

Y. Zhang, W. Ma, H. Yan and Y. Takeuchi, A dynamic model describing heterotrophic culture of chlorella and its stability analysis, Math. Biosci. Eng., 8( 2011), 1117–1133..