%0 Journal Article %A Masat, Francis E. %T Congruences on conventional semigroups %J Czechoslovak Mathematical Journal %D 1981 %P 199-205 %V 31 %N 2 %I mathdoc %U https://geodesic-test.mathdoc.fr/articles/10.21136/CMJ.1981.101737/ %R 10.21136/CMJ.1981.101737 %G en %F 10_21136_CMJ_1981_101737