%0 Journal Article %A Easton, Robert W. %T S3-covers of Schemes %J Canadian journal of mathematics %D 2011 %P 1058-1082 %V 63 %N 5 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-2011-045-8/ %R 10.4153/CJM-2011-045-8 %F 10_4153_CJM_2011_045_8