%0 Journal Article
%A Vlček, Ivan
%T On congruences of the lattices ${\rm Sub (L)}$
%J Commentationes Mathematicae Universitatis Carolinae
%D 1977
%P 541-546
%V 18
%N 3
%U http://geodesic.mathdoc.fr/item/CMUC_1977_18_3_a11/
%G en
%F CMUC_1977_18_3_a11