%0 Journal Article
%A Sochor, Antonín
%T Addition of initial segments. I.
%J Commentationes Mathematicae Universitatis Carolinae
%D 1988
%P 501-517
%V 29
%N 3
%I mathdoc
%U http://geodesic.mathdoc.fr/item/CMUC_1988__29_3_a10/
%G en
%F CMUC_1988__29_3_a10