@article{GDZPPN00210282X, title = {On the Severi problem.}, journal = {Inventiones mathematicae}, volume = {83}, year = {1986}, pages = {445-462}, zbl = {0596.14017}, url = {http://dml.mathdoc.fr/item/GDZPPN00210282X} }
Harris, J. On the Severi problem.. Inventiones mathematicae, Tome 83 (1986) pp. 445-462. http://gdmltest.u-ga.fr/item/GDZPPN00210282X/