TY  - JOUR
AU  - A. M. Samoilenko
AU  - I. V. Polesya
TI  - The existence of separatrix surfaces for systems in standard form
JO  - Differencialʹnye uravneniâ
PY  - 1975
SP  - 1827
EP  - 1831
VL  - 11
IS  - 10
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1975_11_10_a12/
LA  - ru
ID  - DE_1975_11_10_a12
ER  -