A class age-structured HIV/AIDS model with impulsive drug-treatment strategy. Liu, Helong; Li, Lianbing — 2010 Discrete Dynamics in Nature and Society
Stability on coupling SIR epidemic models with vaccination. Liu, Helong; Xu, Houbao; Yu, Jingyuan; Zhu, Guangtian — 2005 Journal of Applied Mathematics
Stability results on age-structured SIS epidemic model with coupling impulsive effect. Liu, Helong; Xu, Houbao; Yu, Jingyuan; Zhu, Guangtian — 2006 Discrete Dynamics in Nature and Society