@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/