TY  - JOUR
AU  - V. N. Chevelo
AU  - V. G. Shtelik
TI  - Some problems in the oscillation of solutions of nonlinear, non-autonomous second-order equations
JO  - Doklady Akademii Nauk
PY  - 1963
SP  - 276
EP  - 279
VL  - 149
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1963_149_2_a14/
LA  - ru
ID  - DAN_1963_149_2_a14
ER  -