%0 Journal Article %A N. I. Brisch %A N. J. Yurchuk %T Certain new boundary value problems for a certain kind of partial differential equations. I %J Differencialʹnye uravneniâ %D 1968 %P 1081-1101 %V 4 %N 6 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1968_4_6_a13/ %G ru %F DE_1968_4_6_a13