T. Amemiya and W. Ma, Global asymptotic stability of nonlinear delayed systems of neutral type, Nonl. Anal. TMA, 54(2003), 83-91.
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- W. Ma and Y. Takeuchi, Asymptotic properties of a delayed SIR epidemic model with density dependent birth rate, Discrete Contin. Dyn. Syst.-B, 4(2004), 671-678.
- 下一条：
- W. Ma, Y. Takeuchi, T. Hara and E. Beretta, Permanence of an SIR epidemic model with distributed time delays, Tohoku Math. J., 54(2002), 581-591.
