@article{1250181477, author = {James, D.G.}, title = {Orthogonal decompositions of indefinite quadratic forms}, journal = {Rocky Mountain J. Math.}, volume = {19}, number = {4}, year = {1989}, pages = { 735-740}, language = {en}, url = {http://dml.mathdoc.fr/item/1250181477} }
James, D.G. Orthogonal decompositions of indefinite quadratic forms. Rocky Mountain J. Math., Tome 19 (1989) no. 4, pp. 735-740. http://gdmltest.u-ga.fr/item/1250181477/