%0 Journal Article %A T. D. Dzhuraev %A A. Sabirov %T Certain boundary value problems for equations of composite type %J Differencialʹnye uravneniâ %D 1977 %P 36-43 %V 13 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1977_13_1_a5/ %G ru %F DE_1977_13_1_a5