%0 Journal Article
%A Jakubík, Ján
%T On directed groups with additional operations
%J Mathematica Bohemica
%D 1993
%P 11-17
%V 118
%N 1
%I mathdoc
%U http://geodesic.mathdoc.fr/articles/10.21136/MB.1993.126020/
%R 10.21136/MB.1993.126020
%G en
%F 10_21136_MB_1993_126020