TY  - JOUR
AU  - Yu. K. Metlyaev
TI  - A qualitative investigation of certain differential equations
JO  - Differencialʹnye uravneniâ
PY  - 1972
SP  - 543
EP  - 544
VL  - 8
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1972_8_3_a19/
LA  - ru
ID  - DE_1972_8_3_a19
ER  -