%0 Journal Article %A Edoardo Ballico %T On Ample and spanned Rank-3 Bundles with Low Chern numbers. %J Manuscripta mathematica %D 1990 %P 9-16 %V 68 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/MM2_1990__68_2_155510/ %F MM2_1990__68_2_155510