TY  - JOUR
AU  - V. I. Borzdyko
TI  - The Existence of a Positive Periodic Solution of the Wangersky--Cunningham Predator-Prey System Allowing for Periodic Changes in the Environment
JO  - Differencialʹnye uravneniâ
PY  - 2002
SP  - 291
EP  - 297
VL  - 38
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_2002_38_3_a0/
LA  - ru
ID  - DE_2002_38_3_a0
ER  -