%0 Journal Article %A A. Yanushauskas %T On the oblique derivative problem for harmonic functions that are regular in a half-space %J Differencialʹnye uravneniâ %D 1991 %P 1947-1958 %V 27 %N 11 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1991_27_11_a11/ %G ru %F DE_1991_27_11_a11