%0 Journal Article
%A Chang, Bai Ching
%T Which Abelian Groups Can be Fundamental Groups of Regions in Euclidean Spaces?
%J Canadian journal of mathematics
%D 1974
%P 7-18
%V 26
%N 1
%U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1974-002-4/
%R 10.4153/CJM-1974-002-4
%F 10_4153_CJM_1974_002_4