@article{GDZPPN00208550X,
title = {Invariants of branched covering from the work of Serre and Mumford.},
journal = {Forum mathematicum},
volume = {8},
year = {1996},
pages = {535-568},
zbl = {0870.57005},
url = {http://dml.mathdoc.fr/item/GDZPPN00208550X}
}
Weintraub, Steven H.; Lee, Ronnie. Invariants of branched covering from the work of Serre and Mumford.. Forum mathematicum, Tome 8 (1996) pp. 535-568. http://gdmltest.u-ga.fr/item/GDZPPN00208550X/