%0 Journal Article %A Ferenc Oravecz %T On the powers of Voiculescu's circular element %J Studia Mathematica %D 2001 %P 85-95 %V 145 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/sm145-1-6/ %R 10.4064/sm145-1-6 %G en %F 10_4064_sm145_1_6