%0 Journal Article %A J. Harris %A I. Morrison %T Slopes of effective divisors on the moduli space of stable curves. %J Inventiones mathematicae %D 1990 %P 321 %V 99 %N 1 %I mathdoc %U https://geodesic-test.mathdoc.fr/item/IM_1990__99_1_143761/ %G un %F IM_1990__99_1_143761