@article{1256046795,
author = {Waterhouse, William C.},
title = {Polynomial group laws over valuation rings},
journal = {Illinois J. Math.},
volume = {26},
number = {4},
year = {1982},
pages = { 252-256},
language = {en},
url = {http://dml.mathdoc.fr/item/1256046795}
}
Waterhouse, William C. Polynomial group laws over valuation rings. Illinois J. Math., Tome 26 (1982) no. 4, pp. 252-256. http://gdmltest.u-ga.fr/item/1256046795/