%0 Journal Article %A V. A. Malovichko %T A boundary value problem for a system of third-order equations of composite type %J Differencialʹnye uravneniâ %D 1989 %P 531-533 %V 25 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1989_25_3_a22/ %G ru %F DE_1989_25_3_a22