TY - JOUR AU - A. Dzhuraev TI - Elliptic systems on the plane with discontinuous coefficients, and JO - Doklady Akademii Nauk PY - 1990 SP - 790 EP - 795 VL - 312 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DAN_1990_312_4_a3/ LA - ru ID - DAN_1990_312_4_a3 ER -