@article{GDZPPN00234629X,
title = {Distributions Invariant under an Orthogonal Group of Arbitrary Signature.},
journal = {Mathematica Scandinavica},
volume = {8},
year = {1960},
pages = {201-218},
zbl = {0104.33402},
url = {http://dml.mathdoc.fr/item/GDZPPN00234629X}
}
Tengstrand, A. Distributions Invariant under an Orthogonal Group of Arbitrary Signature.. Mathematica Scandinavica, Tome 8 (1960) pp. 201-218. http://gdmltest.u-ga.fr/item/GDZPPN00234629X/