Dynamic Complexities in an Epidemic Model with Birth Pulses and Pulse Culling. - Shujing Gao; Lansun Chen; Zhidong Teng; Dehui Xie (Int. J. Bifurc. Chaos, 2007)

The effects of pulse vaccination on SEIR model with two time delays. - Shujing Gao; Zhidong Teng; Dehui Xie (Appl. Math. Comput., 2008)