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Formally real fields, pythagorean fields, C-fields and W-groups.
Mathematische Zeitschrift, Tome 205 (1990) no. 3, pp. 519-530 Cet article a éte moissonné depuis la source European Digital Mathematics Library

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Mots-clés : Witt ring, involutions in Galois groups, formally real field, orderings of fields, relative real closure, superpythagorean fields, pythagorean fields 
@article{MZ_1990__205_3_174192,
     author = {J\'an Min\'ac and Michel Spira},
     title = {Formally real fields, pythagorean fields, {C-fields} and {W-groups.}},
     journal = {Mathematische Zeitschrift},
     pages = {519--530},
     year = {1990},
     volume = {205},
     number = {3},
     zbl = {0692.12005},
     url = {http://geodesic.mathdoc.fr/item/MZ_1990__205_3_174192/}
}
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Ján Minác; Michel Spira. Formally real fields, pythagorean fields, C-fields and W-groups.. Mathematische Zeitschrift, Tome 205 (1990) no. 3, pp. 519-530. http://geodesic.mathdoc.fr/item/MZ_1990__205_3_174192/