%0 Journal Article
%A Janez Ušan
%T A Survey of NP−Polyagroups
%J Mathematica Moravica
%D 2006
%P 149 - 172
%V 10
%N 1
%I mathdoc
%U https://geodesic-test.mathdoc.fr/item/MM3_2006_10_1_a13/
%F MM3_2006_10_1_a13