%0 Journal Article %A Kusuda, Masaharu %T A Characterization of Ideals of C* -Algebras %J Canadian mathematical bulletin %D 1990 %P 455-459 %V 33 %N 4 %U http://geodesic.mathdoc.fr/articles/10.4153/CMB-1990-074-4/ %R 10.4153/CMB-1990-074-4 %F 10_4153_CMB_1990_074_4