%0 Journal Article %A Zenobia Anusiak %T On generalized Beurling's theorem and symmetry of $L_1$-group algebras %J Colloquium Mathematicum %D 1971 %P 287-297 %V 23 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm-23-2-287-297/ %R 10.4064/cm-23-2-287-297 %G en %F 10_4064_cm_23_2_287_297