%0 Journal Article
%A Duda, Jaromír
%T Principal congruence relations and principal tolerances on varieties of lattices
%J Mathematica slovaca
%D 1989
%P 365-369
%V 39
%N 4
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MASLO_1989__39_4_a2/
%G en
%F MASLO_1989__39_4_a2