%0 Journal Article
%A Burde, Gerhard
%T On Branched Coverings of S3
%J Canadian journal of mathematics
%D 1971
%P 84-89
%V 23
%N 1
%U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1971-009-2/
%R 10.4153/CJM-1971-009-2
%F 10_4153_CJM_1971_009_2