%0 Journal Article
%A Eberhard Kirchberg
%T On non-semisplit extensions, tensor products and exactness of group C*-algebras.
%J Inventiones mathematicae
%D 1993
%P 449-490
%V 112
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IM_1993__112_3_144111/
%F IM_1993__112_3_144111