%0 Journal Article %A John F. Carlson %T Exponents of modules and maps. %J Inventiones mathematicae %D 1989 %P 13-24 %V 95 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM_1989__95_3_143643/ %F IM_1989__95_3_143643