@article{1200694120,
author = {Kitamura, Kazuo},
title = {On the free quadratic extensions of a commutative ring},
journal = {Osaka J. Math.},
volume = {10},
number = {1},
year = {1973},
pages = { 15-20},
language = {en},
url = {http://dml.mathdoc.fr/item/1200694120}
}
Kitamura, Kazuo. On the free quadratic extensions of a commutative ring. Osaka J. Math., Tome 10 (1973) no. 1, pp. 15-20. http://gdmltest.u-ga.fr/item/1200694120/