%0 Journal Article %A P. F. Samusenko %T Construction of periodic solutions of a nonlinear singularly perturbed system of differential equations with degeneration %J Differencialʹnye uravneniâ %D 2006 %P 756-763 %V 42 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_2006_42_6_a3/ %G ru %F DE_2006_42_6_a3