@article{1177704981, author = {Shah, B. K. and Khatri, C. G.}, title = {Distribution of a Definite Quadratic Form for Non-Central Normal Variates}, journal = {Ann. Math. Statist.}, volume = {32}, number = {4}, year = {1961}, pages = { 883-887}, language = {en}, url = {http://dml.mathdoc.fr/item/1177704981} }
Shah, B. K.; Khatri, C. G. Distribution of a Definite Quadratic Form for Non-Central Normal Variates. Ann. Math. Statist., Tome 32 (1961) no. 4, pp. 883-887. http://gdmltest.u-ga.fr/item/1177704981/