%0 Journal Article %A B. I. Sokil %A A. F. Barvinsky %T The asymptotic method and periodic Ateb functions in the investigation of some nonlinear wave equations %J Differencialʹnye uravneniâ %D 1982 %P 718-721 %V 18 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1982_18_4_a26/ %G ru %F DE_1982_18_4_a26