TY  - JOUR
AU  - L. D. Nikolenko
TI  - Some criteria for non-oscillation of a fourth order differential equation
JO  - Doklady Akademii Nauk
PY  - 1957
SP  - 483
EP  - 485
VL  - 114
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1957_114_3_a8/
LA  - ru
ID  - DAN_1957_114_3_a8
ER  -