%0 Journal Article %A Walter Rudin %T Invariant means on $L^{∞}$ %J Studia Mathematica %D 1972 %P 219-227 %V 44 %N 3 %U http://geodesic.mathdoc.fr/articles/10.4064/sm-44-3-219-227/ %R 10.4064/sm-44-3-219-227 %G en %F 10_4064_sm_44_3_219_227