@article{1200692686,
author = {Yamamoto, Yoshihiko},
title = {On unramified Galois extensions of quadratic number fields},
journal = {Osaka J. Math.},
volume = {7},
number = {1},
year = {1970},
pages = { 57-76},
language = {en},
url = {http://dml.mathdoc.fr/item/1200692686}
}
Yamamoto, Yoshihiko. On unramified Galois extensions of quadratic number fields. Osaka J. Math., Tome 7 (1970) no. 1, pp. 57-76. http://gdmltest.u-ga.fr/item/1200692686/