TY - JOUR AU - Yu. N. Vladimirskii TI - The theory of semi-Fredholm operators in topological linear spaces JO - Trudy Matematicheskogo Instituta imeni V.A. Steklova PY - 1971 VL - 26 IS - 5 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/RM_1971_26_5_a9/ LA - ru ID - RM_1971_26_5_a9 ER -