@article{GDZPPN002486601,
title = {Sums of Four Cubes.},
journal = {Monatshefte f\"ur Mathematik},
volume = {108},
year = {1989},
pages = {179-188},
zbl = {0679.10038},
url = {http://dml.mathdoc.fr/item/GDZPPN002486601}
}
Brüdern, Jörg. Sums of Four Cubes.. Monatshefte für Mathematik, Tome 108 (1989) pp. 179-188. http://gdmltest.u-ga.fr/item/GDZPPN002486601/