%0 Journal Article %A Daniel G. Davis %T Epimorphic covers make $R^+_G$ a site, for profinite $G$ %J Theory and applications of categories %D 2009 %P 388-400 %V 22 %I mathdoc %U http://geodesic.mathdoc.fr/item/TAC_2009_22_a15/ %G en %F TAC_2009_22_a15