TY  - JOUR
AU  - Friedrich Ulmer
TI  - A Flatness Criterion in Grothendieck Categories.
JO  - Inventiones mathematicae
PY  - 1973
SP  - 331
EP  - 336
VL  - 19
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IM_1973__19_142199/
ID  - IM_1973__19_142199
ER  -