TY  - JOUR
AU  - L. A. Kalyakin
TI  - Justification of asymptotic expansions for the principal resonance equations
JO  - Trudy Instituta matematiki i mehaniki
PY  - 2003
SP  - 88
EP  - 101
VL  - 9
IS  - 1
UR  - http://geodesic.mathdoc.fr/item/TIMM_2003_9_1_a11/
LA  - ru
ID  - TIMM_2003_9_1_a11
ER  -