%0 Journal Article
%A Ernest Płonka
%T Symmetric operations in groups
%J Colloquium Mathematicum
%D 1970
%P 179-186
%V 21
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.4064/cm-21-2-179-186/
%R 10.4064/cm-21-2-179-186
%G en
%F 10_4064_cm_21_2_179_186