TY - JOUR AU - A. Yu. Kolesov AU - N. Kh. Rozov TI - Construction of periodic solutions of a Boussinnesq type equation using the method of quasi-normal forms JO - Fundamentalʹnaâ i prikladnaâ matematika PY - 1995 SP - 207 EP - 220 VL - 1 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/FPM_1995_1_1_a10/ LA - ru ID - FPM_1995_1_1_a10 ER -