%0 Journal Article %A Stefano Trapani %T Numerical criteria for the positivity of the difference of ample divisors. %J Mathematische Zeitschrift %D 1995 %P 387-402 %V 219 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/MZ_1995__219_2_174780/ %F MZ_1995__219_2_174780