1.
Gig Sanit
; (6): 56-8, 2003.
Artigo
em Russo
| MEDLINE
| ID: mdl-14735743
2.
Environ Plan A
; 17(4): 471-8, 1985 Apr.
Artigo
em Inglês
| MEDLINE
| ID: mdl-12266954
RESUMO
"Models are developed for the dynamics of the age structure of the population of a region into which there are migration flows from other regions with different fertility coefficients. The model is explored in detail for a three-age-group population. A number of optimisation problems are formulated which can be used for various planning purposes."