%0 Journal Article %A Medková, Dagmar %T On the convergence of Neumann series for noncompact operators %J Commentationes Mathematicae Universitatis Carolinae %D 1990 %V 31 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMUC_1990__31_2_a23/ %G en %F CMUC_1990__31_2_a23