@article{GDZPPN002190990,
title = {A theory of multiplicity for multiplictive filtrations.},
journal = {Journal f\"ur die reine und angewandte Mathematik},
volume = {272},
year = {1975},
pages = {8-26},
zbl = {0311.13008},
url = {http://dml.mathdoc.fr/item/GDZPPN002190990}
}
Bishop, Wayne. A theory of multiplicity for multiplictive filtrations.. Journal für die reine und angewandte Mathematik, Tome 272 (1975) pp. 8-26. http://gdmltest.u-ga.fr/item/GDZPPN002190990/