@article{GDZPPN002202778,
title = {Representation of a prime as the sum of squares in a tower of fields.},
journal = {Journal f\"ur die reine und angewandte Mathematik},
volume = {358},
year = {1985},
pages = {135-144},
zbl = {0559.12001},
url = {http://dml.mathdoc.fr/item/GDZPPN002202778}
}
Cohn, Harvey. Representation of a prime as the sum of squares in a tower of fields.. Journal für die reine und angewandte Mathematik, Tome 358 (1985) pp. 135-144. http://gdmltest.u-ga.fr/item/GDZPPN002202778/