@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/