%0 Journal Article %A M. Otelbaev %A A. N. Shynybekov %T On well-posed problems of Bicadze--Samarskii type %J Doklady Akademii Nauk %D 1982 %P 815-819 %V 265 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1982_265_4_a10/ %G ru %F DAN_1982_265_4_a10