TY - JOUR AU - Medková, Dagmar TI - On the convergence of Neumann series for noncompact operators JO - Commentationes Mathematicae Universitatis Carolinae PY - 1990 VL - 31 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/CMUC_1990__31_2_a23/ LA - en ID - CMUC_1990__31_2_a23 ER -