%0 Journal Article %A Rocco Duvenhage %T Bergelson's theorem for weakly mixing $C^*$-dynamical systems %J Studia Mathematica %D 2009 %P 235-257 %V 192 %N 3 %U http://geodesic.mathdoc.fr/articles/10.4064/sm192-3-3/ %R 10.4064/sm192-3-3 %G en %F 10_4064_sm192_3_3