TY  - JOUR
AU  - V. M. Volosov
TI  - Solutions of second order non-linear differential equations with slowly varying coefficients
JO  - Doklady Akademii Nauk
PY  - 1957
SP  - 1149
EP  - 1152
VL  - 114
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1957_114_6_a2/
LA  - ru
ID  - DAN_1957_114_6_a2
ER  -