TY  - JOUR
AU  - D. I. Petrov
TI  - Conditions for the applicability of the method of harmonic balance
JO  - Doklady Akademii Nauk
PY  - 1990
SP  - 553
EP  - 556
VL  - 311
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1990_311_3_a8/
LA  - ru
ID  - DAN_1990_311_3_a8
ER  -