%0 Journal Article %A W. Chojnacki %T On projections of $L^∞(G)$ onto translation-invariant subspaces %J Colloquium Mathematicum %D 1978 %P 361-365 %V 39 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm-39-2-361-365/ %R 10.4064/cm-39-2-361-365 %G en %F 10_4064_cm_39_2_361_365