%0 Journal Article
%A Pondělíček, Bedřich
%T On a certain relation for closure operation on a semigroup
%J Czechoslovak Mathematical Journal
%D 1970
%P 220-231
%V 20
%N 2
%U http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1970.100962/
%R 10.21136/CMJ.1970.100962
%G en
%F 10_21136_CMJ_1970_100962