@article{1250126543,
author = {Ewell, John E.},
title = {On sums of sixteen squares},
journal = {Rocky Mountain J. Math.},
volume = {17},
number = {4},
year = {1987},
pages = { 295-300},
language = {en},
url = {http://dml.mathdoc.fr/item/1250126543}
}
Ewell, John E. On sums of sixteen squares. Rocky Mountain J. Math., Tome 17 (1987) no. 4, pp. 295-300. http://gdmltest.u-ga.fr/item/1250126543/