%0 Journal Article %A R. Brauer %T On certain classes of positive definite quadratic forms %J Acta Arithmetica %D 1964 %P 357-364 %V 9 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/aa-9-4-357-364/ %R 10.4064/aa-9-4-357-364 %G en %F 10_4064_aa_9_4_357_364