@article{GDZPPN002244977,
title = {Ueber singul\"are Tangenten algebraischer Fl\"achen},
journal = {Mathematische Annalen},
volume = {15},
year = {1879},
pages = {211-237},
zbl = {11.0468.01},
url = {http://dml.mathdoc.fr/item/GDZPPN002244977}
}
Krey. Ueber singuläre Tangenten algebraischer Flächen. Mathematische Annalen, Tome 15 (1879) pp. 211-237. http://gdmltest.u-ga.fr/item/GDZPPN002244977/