%0 Journal Article
%A Brown, Lawrence G.
%A Lee, Hyun Ho
%T Homotopy Classification of Projections in the Corona Algebra of a Non-simple C*-algebra
%J Canadian journal of mathematics
%D 2012
%P 755-777
%V 64
%N 4
%U http://geodesic.mathdoc.fr/articles/10.4153/CJM-2011-092-x/
%R 10.4153/CJM-2011-092-x
%F 10_4153_CJM_2011_092_x