@article{GDZPPN002096943,
title = {Generalized Exponents of a Free Arrangement of Hyperplanes and Shepherd-Todd-Brieskorn Formula.},
journal = {Inventiones mathematicae},
volume = {64},
year = {1981},
pages = {159-180},
zbl = {0437.51002},
url = {http://dml.mathdoc.fr/item/GDZPPN002096943}
}
Terao, Hiroaki. Generalized Exponents of a Free Arrangement of Hyperplanes and Shepherd-Todd-Brieskorn Formula.. Inventiones mathematicae, Tome 64 (1981) pp. 159-180. http://gdmltest.u-ga.fr/item/GDZPPN002096943/