@article{GDZPPN002488248,
title = {Relative Newton Numbers.},
journal = {Monatshefte f\"ur Mathematik},
volume = {114},
year = {1992},
pages = {149-160},
zbl = {0765.52016},
url = {http://dml.mathdoc.fr/item/GDZPPN002488248}
}
Wegner, Gerd. Relative Newton Numbers.. Monatshefte für Mathematik, Tome 114 (1992) pp. 149-160. http://gdmltest.u-ga.fr/item/GDZPPN002488248/