@article{GDZPPN002214113,
title = {Sums of powers in rings and the real holomorphy ring.},
journal = {Journal f\"ur die reine und angewandte Mathematik},
volume = {475},
year = {1996},
pages = {71-104},
zbl = {0922.12003},
url = {http://dml.mathdoc.fr/item/GDZPPN002214113}
}
Powers, Victoria; Becker, E. Sums of powers in rings and the real holomorphy ring.. Journal für die reine und angewandte Mathematik, Tome 475 (1996) pp. 71-104. http://gdmltest.u-ga.fr/item/GDZPPN002214113/