%0 Journal Article %A Panagis Karazeris %T Notions of flatness relative to a Grothendieck topology %J Theory and applications of categories %D 2004 %P 225-236 %V 12 %I mathdoc %U http://geodesic.mathdoc.fr/item/TAC_2004_12_a4/ %G en %F TAC_2004_12_a4