%0 Journal Article %A A. B. Vasil'eva %A V. T. Volkov %T Periodic solutions of singularly perturbed equations of parabolic type %J Differencialʹnye uravneniâ %D 1985 %P 1755-1760 %V 21 %N 10 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1985_21_10_a17/ %G ru %F DE_1985_21_10_a17