@article{GDZPPN002331683, title = {Quadratic Forms and Holomorphic Foliations on Singular Surfaces.}, journal = {Mathematische Annalen}, volume = {280}, year = {1988}, pages = {177-184}, zbl = {0657.32007}, url = {http://dml.mathdoc.fr/item/GDZPPN002331683} }
Camacho, César. Quadratic Forms and Holomorphic Foliations on Singular Surfaces.. Mathematische Annalen, Tome 280 (1988) pp. 177-184. http://gdmltest.u-ga.fr/item/GDZPPN002331683/