Gao, Haiyin Existence of solution and optimal harvesting control for nonlinear age-dependent population diffusion system. (Chinese. English summary) Zbl 1150.49333 J. Jilin Univ., Sci. 45, No. 4, 544-554 (2007). Summary: The nonlinear age-dependent population diffusion system was established. The existence of the generalized solution and that of the optimal control for the system were proved via the theory of partial differential equations combined with the delay method. The necessary conditions for the optimal control was given. MSC: 49N90 Applications of optimal control and differential games 93C95 Application models in control theory 92D25 Population dynamics (general) Keywords:population diffusion system; generalized solution; optimal control PDFBibTeX XMLCite \textit{H. Gao}, J. Jilin Univ., Sci. 45, No. 4, 544--554 (2007; Zbl 1150.49333)