%0 Journal Article %A Chajda, Ivan %A Duda, Jaromír %T Compact universal relation in varieties with constants %J Czechoslovak Mathematical Journal %D 1997 %P 173-178 %V 47 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/CMJ_1997__47_1_a13/ %G en %F CMJ_1997__47_1_a13