TY - JOUR AU - M. A. Abdrachmanov TI - 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 JO - Differencialʹnye uravneniâ PY - 1986 SP - 344 EP - 345 VL - 22 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1986_22_2_a19/ LA - ru ID - DE_1986_22_2_a19 ER -