%0 Journal Article
%A A. Wallace
%T Problems on semigroups
%J Colloquium Mathematicum
%D 1961
%P 223-224
%V 8
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.4064/cm-8-2-223-224/
%R 10.4064/cm-8-2-223-224
%G en
%F 10_4064_cm_8_2_223_224