%0 Journal Article %A Seán Keel %T Basepoint freeness for nef and big line bundles in positive characteristic %J Annals of mathematics %D 1999 %V 149 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/AM_1999_149_1_a7/ %F AM_1999_149_1_a7