TY  - JOUR
AU  - B. Puzha
TI  - A comparison theorem for systems of two differential equations
JO  - Differencialʹnye uravneniâ
PY  - 1977
SP  - 1338
EP  - 1340
VL  - 13
IS  - 7
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1977_13_7_a25/
LA  - ru
ID  - DE_1977_13_7_a25
ER  -