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AN SIRS EPIDEMIC MODEL被引量：2: 《Applied Mathematics(A Journal of Chinese Universities)》2004年第1期101-108,共8页ChenJunjie; Supported by the Science and Technology Foundation of Zhejiang University(1 0 70 0 0 - 54430 1 ); This paper considers an SIRS epidemic model that incorporates constant immigrati on rate, a general population size dependent contact rate and proportional tran sfer rate from the infective class to susceptible class...; 关键词：epidemic model threshold endemic equilibrium global stability. ON 3 CHOOSABILITY OF PLANE GRAPHS WITHOUT 6 7 AND 9 CYCLES$$$$ Zhang Haihui 1 2 Xu Baogang 11School of Math. and Comput. Sci. Nanjing Normal Univ. Nanji ng 21009

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