%0 Journal Article
%A J. Koppitz
%T Hypersubstitutions and groups
%J Novi Sad Journal of Mathematics
%D 2004
%P 127-139
%V 34
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/NSJOM_2004_34_2a_9/
%F NSJOM_2004_34_2a_9