@article{GDZPPN00219208X,
title = {Valuations and lengths of constructible modules.},
journal = {Journal f\"ur die reine und angewandte Mathematik},
volume = {281},
year = {1976},
pages = {186-201},
zbl = {0327.13010},
url = {http://dml.mathdoc.fr/item/GDZPPN00219208X}
}
Ribenboim, P. Valuations and lengths of constructible modules.. Journal für die reine und angewandte Mathematik, Tome 281 (1976) pp. 186-201. http://gdmltest.u-ga.fr/item/GDZPPN00219208X/