标题 The Effect of Constant and Mixed Impulsive Vaccination on SIS Epidemic Models Incorporating Media Coverage

作者 􀀀Yongfeng Li, Chaoqun Ma, and Jingan Cui

期刊名称： Rocky Mountain J. Math. Volume 38, Number 5 (2008), 1437-1455.

电子链接  http://nsdl.org/resource/2200/20081023114644369T

[此贴子已经被作者于2009-1-5 21:46:27编辑过]