%0 Journal Article %A Kieran G. O'Grady %T Moduli of vector bundles on projective surfaces: some basic results. %J Inventiones mathematicae %D 1996 %P 141-208 %V 123 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/IM_1996__123_3_144340/ %F IM_1996__123_3_144340