Geodesic
Witt groups of real projective surfaces.
Mathematische Annalen, Tome 288 (1990) no. 1, pp. 89-102

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Mots-clés : birational characterization of real projective space, quadratic forms, Witt group, real components of algebraic varieties, unramified cohomology 
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     author = {R. Sujatha},
     title = {Witt groups of real projective surfaces.},
     journal = {Mathematische Annalen},
     pages = {89--102},
     publisher = {mathdoc},
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     number = {1},
     year = {1990},
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     url = {http://geodesic.mathdoc.fr/item/MAN_1990__288_1_164725/}
}
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R. Sujatha. Witt groups of real projective surfaces.. Mathematische Annalen, Tome 288 (1990) no. 1, pp. 89-102. http://geodesic.mathdoc.fr/item/MAN_1990__288_1_164725/