@article{1077311635,
author = {Waterhouse, William C.},
title = {Self-adjoint operators and formally real fields},
journal = {Duke Math. J.},
volume = {43},
number = {1},
year = {1976},
pages = { 237-243},
language = {en},
url = {http://dml.mathdoc.fr/item/1077311635}
}
Waterhouse, William C. Self-adjoint operators and formally real fields. Duke Math. J., Tome 43 (1976) no. 1, pp. 237-243. http://gdmltest.u-ga.fr/item/1077311635/