The numbers of sums of quadratic residues and of non-residues respectively taken n at a time and congruent to any given integer to an odd prime modulus p.
@article{GDZPPN002162695,
title = {The numbers of sums of quadratic residues and of non-residues respectively taken n at a time and congruent to any given integer to an odd prime modulus p.},
journal = {Journal f\"ur die reine und angewandte Mathematik},
volume = {112},
year = {1893},
pages = {247-261},
zbl = {25.0282.01},
url = {http://dml.mathdoc.fr/item/GDZPPN002162695}
}
Fields, J.C. The numbers of sums of quadratic residues and of non-residues respectively taken n at a time and congruent to any given integer to an odd prime modulus p.. Journal für die reine und angewandte Mathematik, Tome 112 (1893) pp. 247-261. http://gdmltest.u-ga.fr/item/GDZPPN002162695/