TY  - JOUR
AU  - V. M. Lebedeva
TI  - The number of periodic solutions of a first order differential equation with right-hand side in the form of an incomplete polynomial
JO  - Differencialʹnye uravneniâ
PY  - 1969
SP  - 1029
EP  - 1036
VL  - 5
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1969_5_6_a5/
LA  - ru
ID  - DE_1969_5_6_a5
ER  -