中国科学院数学与系统科学研究院期刊网
JSSC
ON AN SIS EPIDEMIC MODEL WITH STAGE STRUCTURE
Yan Ni XIAO;Lan Sun CHEN
ON AN SIS EPIDEMIC MODEL WITH STAGE STRUCTURE
Yan Ni XIAO;Lan Sun CHEN
Journal of Systems Science and Complexity . 2003, (2): 275 -288 .