%0 Journal Article %A P. Jarek %T Commutative regular semigroups %J Colloquium Mathematicum %D 1964 %P 195-208 %V 12 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm-12-2-195-208/ %R 10.4064/cm-12-2-195-208 %G en %F 10_4064_cm_12_2_195_208