%0 Journal Article %A B. Baimenov %T Boundary value problems for equations of mixed-composite type %J Differencialʹnye uravneniâ %D 1981 %P 13-17 %V 17 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1981_17_1_a1/ %G ru %F DE_1981_17_1_a1