1Beretta E, Takeuchi Y. Global stability of an SIR epidemic model with time delays[J]. .J Math Biol, 1995, 33: 250-260. 被引量：1
2Beretta E, Takeuchi Y. Convergence results in SIR epidemic model with varying population sizes[J].Nonl Anal, 1997, 28: 1909-1921. 被引量：1
3Beretta E, Hara T, M a W, Takeuchi Y. Global asymptotically sta- bility of an SIR epidemic model with distributed time delay [J].Nonl Anal, 2001, 47:4107-4115. 被引量：1
4Hale J K. Theory of Functional Differential Equations [M]. Springer-Verlag, New York, 1977. 被引量：1
5Y. Kuang, Delay Differential Equations with Application s in Pop- ulation Dynamics[M].Academic Press, San Diego, 1993. 被引量：1
