@article{1077379292, author = {Spira, Robert}, title = {Residue class characters}, journal = {Duke Math. J.}, volume = {37}, number = {1}, year = {1970}, pages = { 633-637}, language = {en}, url = {http://dml.mathdoc.fr/item/1077379292} }
Spira, Robert. Residue class characters. Duke Math. J., Tome 37 (1970) no. 1, pp. 633-637. http://gdmltest.u-ga.fr/item/1077379292/