@article{1183505200, author = {Niven, Ivan}, title = {The Pell equation in quadratic fields}, journal = {Bull. Amer. Math. Soc.}, volume = {49}, number = {12}, year = {1943}, pages = { 413-416}, language = {en}, url = {http://dml.mathdoc.fr/item/1183505200} }
Niven, Ivan. The Pell equation in quadratic fields. Bull. Amer. Math. Soc., Tome 49 (1943) no. 12, pp. 413-416. http://gdmltest.u-ga.fr/item/1183505200/