%0 Journal Article %A M. Barnovska %T A boundary value problem with a matrix parameter %J Differencialʹnye uravneniâ %D 1985 %P 716-717 %V 21 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1985_21_4_a19/ %G ru %F DE_1985_21_4_a19