@article{GDZPPN00224408X, title = {Singularit\"aten des Complexes n-ten Grades}, journal = {Mathematische Annalen}, volume = {12}, year = {1877}, pages = {202-221}, url = {http://dml.mathdoc.fr/item/GDZPPN00224408X} }
Schubert. Singularitäten des Complexes n-ten Grades. Mathematische Annalen, Tome 12 (1877) pp. 202-221. http://gdmltest.u-ga.fr/item/GDZPPN00224408X/