%0 Journal Article
%A J. Dudek
%T Number of algebraic operations in idempotent groupoids
%J Colloquium Mathematicum
%D 1970
%P 169-177
%V 21
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.4064/cm-21-2-169-177/
%R 10.4064/cm-21-2-169-177
%G en
%F 10_4064_cm_21_2_169_177