%0 Journal Article
%A Vagn Lundsgaard Hansen
%T The characteristic algebra of a polynomial covering map.
%J Mathematica Scandinavica
%D 1989
%P 219-225
%V 64
%N 2
%I mathdoc
%U http://geodesic.mathdoc.fr/item/MS2_1989__64_2_186113/
%F MS2_1989__64_2_186113