ZHU Hui1,2,XIONG Zuo-liang1(1.Department of Mathematics,Nanchang University,Nanchang 330031,China;2.Department of Computing Science,Huaiyin Institute of Technology,Huaian 223002,China)
Abstract：An SIV epidemic model with impulsive vaccination and nonlinear incidence rate is studied.Besides,a varying total population size,the natural death rate which is related to the total population size and the disease-related death rate are considered.The exi
2007, Vol. 29 