TY - JOUR AU - Panagis Karazeris TI - Notions of flatness relative to a Grothendieck topology JO - Theory and applications of categories PY - 2004 SP - 225 EP - 236 VL - 12 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TAC_2004_12_a4/ LA - en ID - TAC_2004_12_a4 ER -