%0 Journal Article %A A. B. Vasil'eva %T Periodic solutions of equations of parabolic type with small parameters %J Differencialʹnye uravneniâ %D 1983 %P 2076-2081 %V 19 %N 12 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1983_19_12_a7/ %G ru %F DE_1983_19_12_a7