TY  - JOUR
AU  - V. A. Kondratiev
TI  - On the oscillation of solutions of linear differential equations of the third and fourth order
JO  - Doklady Akademii Nauk
PY  - 1958
SP  - 22
EP  - 24
VL  - 118
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1958_118_1_a4/
LA  - ru
ID  - DAN_1958_118_1_a4
ER  -