%0 Journal Article
%A Paul F. X. Müller
%T A simplification in the proof of the non-isomorphism
 between $H^1(\delta )$ and $H^1(\delta ^2)$
%J Studia Mathematica
%D 2002
%P 13-16
%V 150
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.4064/sm150-1-2/
%R 10.4064/sm150-1-2
%G en
%F 10_4064_sm150_1_2