%0 Journal Article %A A. I. Ibragimov %T On the behavior on the boundary of solutions of a degenerate second-order elliptic equation %J Doklady Akademii Nauk %D 1975 %P 519-522 %V 224 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1975_224_3_a4/ %G ru %F DAN_1975_224_3_a4