%0 Journal Article
%A Friedrich Ulmer
%T A Flatness Criterion in Grothendieck Categories.
%J Inventiones mathematicae
%D 1973
%P 331-336
%V 19
%I mathdoc
%U http://geodesic.mathdoc.fr/item/IM_1973__19_142199/
%F IM_1973__19_142199