%0 Journal Article
%A J. Dudek
%T A characterization of some idempotent abelian groupoids
%J Colloquium Mathematicum
%D 1974
%P 219-223
%V 30
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.4064/cm-30-2-219-223/
%R 10.4064/cm-30-2-219-223
%G en
%F 10_4064_cm_30_2_219_223