The reduced Wittring
Colloque sur les formes quadratiques (Montpellier, 1977), Mémoires de la Société Mathématique de France, no. 59 (1979), pp. 11-12.
@incollection{MSMF_1979__59__11_0,
     author = {Becker, Eberhard},
     title = {The reduced Wittring},
     booktitle = {Colloque sur les formes quadratiques (Montpellier, 1977)},
     author = {Collectif},
     series = {M\'emoires de la Soci\'et\'e Math\'ematique de France},
     pages = {11--12},
     publisher = {Soci\'et\'e math\'ematique de France},
     number = {59},
     year = {1979},
     doi = {10.24033/msmf.245},
     url = {http://www.numdam.org/articles/10.24033/msmf.245/}
}
Becker, Eberhard. The reduced Wittring, dans Colloque sur les formes quadratiques (Montpellier, 1977), Mémoires de la Société Mathématique de France, no. 59 (1979), pp. 11-12. doi : 10.24033/msmf.245. http://www.numdam.org/articles/10.24033/msmf.245/

[1] E. Becker and E. Köpping, Reduzierte quadratische Formen und Semiordnungen reeller Körper, Abh, Math. Sem. Univ. Hamburg 46 (1977), 143-177. | Zbl 0365.12011

[2] L. Bröcker, Zur Theorie der quadratischen Formen über formalreellen Körpern, Math. Ann. 210 (1974), 233-256. | Zbl 0273.13018

[3] L. Bröcker, Characterizations of fans and hereditarily pythagorean fields, Math. Z. 152 (1976), 149-163. | MR 54 #10224 | Zbl 0319.12102

[4] R. Brown, The reduced Wittring of a formally real field, Trans. Amer. Math. Soc. 230 (1977), 257-292. | MR 57 #12471 | Zbl 0356.12025

[5] J. Milnor and D. Husemöller, Symmetric Bilinear Forms, Springer-Verlag (1973). | Zbl 0292.10016

[6] A. Pfister, Quadratische Formen in beliebigen Körpern, Invent. Math. 1 (1966), 116-132. | MR 34 #169 | Zbl 0142.27203