@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/