%0 Journal Article
%A Bertram Yood
%T Ascent, descent and roots of Fredholm operators
%J Studia Mathematica
%D 2003
%P 219-226
%V 158
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.4064/sm158-3-3/
%R 10.4064/sm158-3-3
%G en
%F 10_4064_sm158_3_3