%0 Journal Article %A Šmarda, Bohumil %T Local semigroups %J Czechoslovak Mathematical Journal %D 1986 %P 59-67 %V 36 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1986.102066/ %R 10.21136/CMJ.1986.102066 %G en %F 10_21136_CMJ_1986_102066