%0 Journal Article %A Zhang, Shuang %T On the Structure of Projections and Ideals of Corona Algebras %J Canadian journal of mathematics %D 1989 %P 721-742 %V 41 %N 4 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1989-033-4/ %R 10.4153/CJM-1989-033-4 %F 10_4153_CJM_1989_033_4