%0 Journal Article
%A L. Drewnowski
%T Some characterizations of semi-Fredholm operators
%J Commentationes Mathematicae
%D 1984
%P  215-218
%V 24
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.14708/cm.v24i2.6093/
%R 10.14708/cm.v24i2.6093
%G pl
%F 10_14708_cm_v24i2_6093