%0 Journal Article %A César Camacho %T Quadratic Forms and Holomorphic Foliations on Singular Surfaces. %J Mathematische Annalen %D 1988 %P 177-184 %V 282 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/MAN_1988__282_2_164456/ %F MAN_1988__282_2_164456