@article{GDZPPN002199718,
title = {Moduli spaces of covers and the Hurwitz monodromy group.},
journal = {Journal f\"ur die reine und angewandte Mathematik},
volume = {334},
year = {1982},
pages = {87-121},
zbl = {0484.14002},
url = {http://dml.mathdoc.fr/item/GDZPPN002199718}
}
Fried, M.; Biggers, R. Moduli spaces of covers and the Hurwitz monodromy group.. Journal für die reine und angewandte Mathematik, Tome 334 (1982) pp. 87-121. http://gdmltest.u-ga.fr/item/GDZPPN002199718/