@article{1177698877,
author = {Kotz, Samuel and Johnson, N. L. and Boyd, D. W.},
title = {Series Representations of Distributions of Quadratic Forms in Normal Variables. I. Central Case},
journal = {Ann. Math. Statist.},
volume = {38},
number = {6},
year = {1967},
pages = { 823-837},
language = {en},
url = {http://dml.mathdoc.fr/item/1177698877}
}
Kotz, Samuel; Johnson, N. L.; Boyd, D. W. Series Representations of Distributions of Quadratic Forms in Normal Variables. I. Central Case. Ann. Math. Statist., Tome 38 (1967) no. 6, pp. 823-837. http://gdmltest.u-ga.fr/item/1177698877/