%0 Journal Article %A M. A. Yagubov %T The branching of the solutions of a mixed problem for a certain operator-differential equation %J Differencialʹnye uravneniâ %D 1970 %P 1528-1531 %V 6 %N 8 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1970_6_8_a25/ %G ru %F DE_1970_6_8_a25