%0 Journal Article %A Julio Benítez %A Vladimir Rakočević %T Invertibility of the commutator of an element in a $C^*$-algebra and its Moore–Penrose inverse %J Studia Mathematica %D 2010 %P 163-174 %V 200 %N 2 %U http://geodesic.mathdoc.fr/articles/10.4064/sm200-2-4/ %R 10.4064/sm200-2-4 %G en %F 10_4064_sm200_2_4