@article{GDZPPN00233416X,
title = {Infinitely near imposed singularities and singularities of polar curves.},
journal = {Mathematische Annalen},
volume = {287},
year = {1990},
pages = {429-454},
zbl = {0675.14009},
url = {http://dml.mathdoc.fr/item/GDZPPN00233416X}
}
Casas-Alvero, E. Infinitely near imposed singularities and singularities of polar curves.. Mathematische Annalen, Tome 287 (1990) pp. 429-454. http://gdmltest.u-ga.fr/item/GDZPPN00233416X/