%0 Journal Article
%A Kubiak, Tomasz
%T A strengthening of the Katětov-Tong insertion theorem
%J Commentationes Mathematicae Universitatis Carolinae
%D 1993
%P 357-362
%V 34
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/CMUC_1993__34_2_a17/
%G en
%F CMUC_1993__34_2_a17