TY  - JOUR
AU  - Jiang, Daqing
AU  - Wei, Junjie
AU  - Zhang, Bo
TI  - Positive periodic solutions of functional differential equations and population models
JO  - Electronic Journal of Differential Equations
PY  - 2002
VL  - 2002
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/EJDE_2002__2002__a116/
LA  - en
ID  - EJDE_2002__2002__a116
ER  -