%0 Journal Article %A M. A. Abdrachmanov %T On solvability conditions and $L_2$-estimates of the solution of a problem for a system of equations of mixed type in a half-space %J Differencialʹnye uravneniâ %D 1986 %P 344-345 %V 22 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1986_22_2_a19/ %G ru %F DE_1986_22_2_a19