%0 Journal Article %A A. Yu. Berezin %T A problem with an oblique derivative for an elliptic system %J Differencialʹnye uravneniâ %D 1985 %P 158-161 %V 21 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1985_21_1_a21/ %G ru %F DE_1985_21_1_a21