%0 Journal Article %A A. Yu. Kolesov %A N. Kh. Rozov %T Construction of periodic solutions of a Boussinnesq type equation using the method of quasi-normal forms %J Fundamentalʹnaâ i prikladnaâ matematika %D 1995 %P 207-220 %V 1 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/FPM_1995_1_1_a10/ %G ru %F FPM_1995_1_1_a10