TY  - GEN
AU  - Hritonenko, Natali
AU  - Yatsenko, Yuri     
TI  - Mathematical modeling in economics, ecology and the environment
SN  - 079236015X
U1  - 363.700684 
PY  - 1999///
CY  - Boston

PB  - Kluwer academic publishers
KW  - Social services; association
ER  -