Integral quadratic forms : applications to algebraic geometry
Séminaire Bourbaki : volume 1982/83, exposés 597-614, Astérisque, no. 105-106 (1983), Exposé no. 611, 28 p. 
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     author = {Dolgachev, Igor},
     title = {Integral quadratic forms : applications to algebraic geometry},
     booktitle = {S\'eminaire Bourbaki : volume 1982/83, expos\'es 597-614},
     series = {Ast\'erisque},
     note = {talk:611},
     pages = {251--278},
     publisher = {Soci\'et\'e math\'ematique de France},
     number = {105-106},
     year = {1983},
     mrnumber = {728992},
     zbl = {0535.10018},
     language = {en},
     url = {http://www.numdam.org/item/SB_1982-1983__25__251_0/}
}
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Dolgachev, Igor. Integral quadratic forms : applications to algebraic geometry, dans Séminaire Bourbaki : volume 1982/83, exposés 597-614, Astérisque, no. 105-106 (1983), Exposé no. 611, 28 p. http://www.numdam.org/item/SB_1982-1983__25__251_0/

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