TY - JOUR AU - Kh. Abduvaitov TI - On~bounded invertibility of a second-order differential operator JO - Trudy Matematicheskogo Instituta imeni V.A. Steklova PY - 1986 SP - 189 EP - 190 VL - 41 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/RM_1986_41_2_a6/ LA - en ID - RM_1986_41_2_a6 ER -