TY - JOUR AU - S. M. Dolganova TI - Semi-Fredholm families of operators in topological vector spaces JO - Trudy Matematicheskogo Instituta imeni V.A. Steklova PY - 1972 VL - 27 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/RM_1972_27_4_a16/ LA - ru ID - RM_1972_27_4_a16 ER -