@article{GDZPPN002197596,
title = {On the least quadratic non-residue of a prime p ... 3 (mod 4).},
journal = {Journal f\"ur die reine und angewandte Mathematik},
volume = {316},
year = {1980},
pages = {106-109},
zbl = {0425.10004},
url = {http://dml.mathdoc.fr/item/GDZPPN002197596}
}
Williams, Kenneth S.; Hudson, Richard H. On the least quadratic non-residue of a prime p ... 3 (mod 4).. Journal für die reine und angewandte Mathematik, Tome 316 (1980) pp. 106-109. http://gdmltest.u-ga.fr/item/GDZPPN002197596/