%0 Journal Article
%A Kučera, Radan
%T A generalization of a unit index of Greither
%J Communications in Mathematics
%D 1998
%P 149-154
%V 6
%N 1
%U http://geodesic.mathdoc.fr/item/COMIM_1998_6_1_a17/
%G en
%F COMIM_1998_6_1_a17