中国科学院数学与系统科学研究院期刊网
AMS
Two-group SIR Epidemic Model with Stochastic Perturbation
Chun Yan JI, Da Qing JIANG, Ning Zhong SHI
Acta Mathematica Sinica . 2012, (12): 2545 -2560 .  DOI: 10.1007/s10114-012-9668-3