@article{bwmeta1.element.bwnjournal-article-aav29i3p257bwm,
author = {Greaves, G.},
title = {On the representation of a number in the form x^2+y^2+p^2+q^2 where p, q are odd primes},
journal = {Acta Arithmetica},
volume = {31},
year = {1976},
pages = {257-274},
zbl = {0283.10030},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-aav29i3p257bwm}
}
Greaves, G. On the representation of a number in the form x^2+y^2+p^2+q^2 where p, q are odd primes. Acta Arithmetica, Tome 31 (1976) pp. 257-274. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-aav29i3p257bwm/