TY  - JOUR
AU  - V. I. Gaǐduk
TI  - On nonlinear oscillations in a weak external field, a description by Lagrange's equations
JO  - Doklady Akademii Nauk
PY  - 1960
SP  - 760
EP  - 763
VL  - 133
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1960_133_4_a5/
LA  - ru
ID  - DAN_1960_133_4_a5
ER  -