%0 Journal Article %A Liu, Junping %A Wei, Changguo %T Unital extensions of $AF$-algebras by purely infinite simple algebras %J Czechoslovak Mathematical Journal %D 2014 %P 989-1001 %V 64 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.1007/s10587-014-0148-z/ %R 10.1007/s10587-014-0148-z %G en %F 10_1007_s10587_014_0148_z