具周期性潜伏期的SEIR传染病模型的动力学
王双明,樊馨蔓,张明军,梁俊荣

The Dynamics of an SEIR Epidemic Model with Time-Periodic Latent Period
Shuangming Wang,Xingman Fan,Mingjun Zhang,Junrong Liang
图 1 ${\mathcal R}_0=0.9278 <1$时解的长时间行为