Optimal birth control for predator-prey system of three species with age-structure. - Zhixue Luo; Ze-Rong He; Wan-Tong Li (Appl. Math. Comput., 2004)

Optimal control for a class of nonlinear age-distributed population systems. - Junjie Chen; Ze-Rong He (Appl. Math. Comput., 2009)

Behavioral analysis of a nonlinear three-staged population model with age-size-structure. - Yan Liu; Ze-Rong He (Appl. Math. Comput., 2014)

Optimal control for age-dependent population hybrid system in a polluted environment. - Zhixue Luo; Ze-Rong He (Appl. Math. Comput., 2014)