%0 Journal Article %A G. J. Murphy %T Averaging theorems for linear operators in compact groups and semigroups %J Studia Mathematica %D 1997 %P 249-258 %V 124 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/sm-124-3-249-258/ %R 10.4064/sm-124-3-249-258 %G en %F 10_4064_sm_124_3_249_258