MathSciNet bibliographic data MR392880 (52 #13693) 12D99 Ellison, W. J. On sums of squares in \$Q\sp{1/2}(X)\$$Q\sp{1/2}(X)$ etc. Séminaire de Théorie des Nombres, 1970-1971 (Univ. Bordeaux I, Talence), Exp. No. 9, 5 pp. Lab. Théorie des Nombres, Centre Nat. Recherche Sci., Talence, 1971. Links to the journal or article are not yet available

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