TY - JOUR AU - Daniel G. Davis TI - Epimorphic covers make $R^+_G$ a site, for profinite $G$ JO - Theory and applications of categories PY - 2009 SP - 388 EP - 400 VL - 22 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TAC_2009_22_a15/ LA - en ID - TAC_2009_22_a15 ER -