%0 Journal Article %A Chajda, Ivan %T Varieties with modular and distributive lattices of symmetric or reflexive relations %J Czechoslovak Mathematical Journal %D 1992 %P 623-630 %V 42 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1992.128357/ %R 10.21136/CMJ.1992.128357 %G en %F 10_21136_CMJ_1992_128357