Geodesic
On the independence of the linear and quadratic forms on independent random variables
Žurnal matematičeskoj fiziki, analiza, geometrii, Tome 8 (2001) no. 1, pp. 17-41 
K. I. Kabanov. On the independence of the linear and quadratic forms on independent random variables. Žurnal matematičeskoj fiziki, analiza, geometrii, Tome 8 (2001) no. 1, pp. 17-41. http://geodesic.mathdoc.fr/item/JMAG_2001_8_1_a1/
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     title = {On the independence of the linear and quadratic forms on independent random variables},
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     url = {http://geodesic.mathdoc.fr/item/JMAG_2001_8_1_a1/}
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Voir la notice de l'article provenant de la source Math-Net.Ru

We consider generalizations of the Laha's theorem on the independence of the sample mean and the quadratic form for any linear and quadratic forms.