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@article{AM2_1980__21_182409, author = {T.M.K. Davison}, title = {A functional equation for quadratic forms.}, journal = {Aequationes mathematicae}, pages = {1--7}, publisher = {mathdoc}, volume = {21}, year = {1980}, zbl = {0451.39008}, url = {http://geodesic.mathdoc.fr/item/AM2_1980__21_182409/} }
T.M.K. Davison. A functional equation for quadratic forms.. Aequationes mathematicae, Tome 21 (1980), pp. 1-7. http://geodesic.mathdoc.fr/item/AM2_1980__21_182409/