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Translated from Matematicheskie Zametki, Vol. 55, No. 4, pp. 114–119, April 1994.
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Chernousov, V.I. The group of congruence coefficients of a canonical quadratic form and stable rationality of the PSO variety. Math Notes 55, 413–416 (1994). https://doi.org/10.1007/BF02112482
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DOI: https://doi.org/10.1007/BF02112482