%0 Journal Article %A Pondělíček, Bedřich %T Tolerance distributive and tolerance Boolean varieties of semigroups %J Czechoslovak Mathematical Journal %D 1986 %P 617-622 %V 36 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1986.102120/ %R 10.21136/CMJ.1986.102120 %G en %F 10_21136_CMJ_1986_102120