@article{1077465588,
author = {Ankeny, N. C.},
title = {Quadratic residues},
journal = {Duke Math. J.},
volume = {21},
number = {1},
year = {1954},
pages = { 107-112},
language = {en},
url = {http://dml.mathdoc.fr/item/1077465588}
}
Ankeny, N. C. Quadratic residues. Duke Math. J., Tome 21 (1954) no. 1, pp. 107-112. http://gdmltest.u-ga.fr/item/1077465588/