@article{1195516032,
author = {Oshikawa, Keiichi},
title = {On formal groups over complete discrete valuation rings, I},
journal = {Proc. Japan Acad. Ser. A Math. Sci.},
volume = {58},
number = {5},
year = {1982},
pages = { 216-218},
language = {en},
url = {http://dml.mathdoc.fr/item/1195516032}
}
Oshikawa, Keiichi. On formal groups over complete discrete valuation rings, I. Proc. Japan Acad. Ser. A Math. Sci., Tome 58 (1982) no. 5, pp. 216-218. http://gdmltest.u-ga.fr/item/1195516032/