%0 Journal Article %A A. I. Yanushauskas %T An application of degenerate equations to the investigation of the oblique derivative problem %J Differencialʹnye uravneniâ %D 1969 %P 81-90 %V 5 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1969_5_1_a4/ %G ru %F DE_1969_5_1_a4