%0 Journal Article %A M. F. Timan %T The behavior near the boundary of the derivatives of the solution of a certain boundary value problem %J Differencialʹnye uravneniâ %D 1977 %P 538-543 %V 13 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1977_13_3_a17/ %G ru %F DE_1977_13_3_a17