@article{01295608,
title = {Normal families, multiplicity and the branch set of quasiregular maps.},
journal = {Annales Academiae Scientiarum Fennicae. Mathematica},
volume = {24},
year = {1999},
pages = {231-252},
zbl = {0923.30015},
language = {en},
url = {http://dml.mathdoc.fr/item/01295608}
}
Martio, O.; Srebro, U.; Väisälä, J. Normal families, multiplicity and the branch set of quasiregular maps.. Annales Academiae Scientiarum Fennicae. Mathematica, Tome 24 (1999) pp. 231-252. http://gdmltest.u-ga.fr/item/01295608/