@article{GDZPPN002186020,
title = {On the quadratic character of some quadratic surds.},
journal = {Journal f\"ur die reine und angewandte Mathematik},
volume = {247},
year = {1971},
pages = {42-48},
zbl = {0222.12007},
url = {http://dml.mathdoc.fr/item/GDZPPN002186020}
}
Lehmer, Emma. On the quadratic character of some quadratic surds.. Journal für die reine und angewandte Mathematik, Tome 247 (1971) pp. 42-48. http://gdmltest.u-ga.fr/item/GDZPPN002186020/