%0 Journal Article
%A Jakubík, Ján
%T On convexities of $d$-groups
%J Czechoslovak Mathematical Journal
%D 1994
%P 305-314
%V 44
%N 2
%U http://geodesic.mathdoc.fr/articles/10.21136/CMJ.1994.128457/
%R 10.21136/CMJ.1994.128457
%G en
%F 10_21136_CMJ_1994_128457