TY  - JOUR
AU  - A. Ya. Khokhryakov
AU  - B. M. Arkhipov
TI  - A theorem on a differential inequality for a periodic boundary value problem for an ordinary differential equation of the second order
JO  - Differencialʹnye uravneniâ
PY  - 1965
SP  - 335
EP  - 345
VL  - 1
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1965_1_3_a7/
LA  - ru
ID  - DE_1965_1_3_a7
ER  -