A. Hassairi, THE (D-ORBITS OF THE MORRIS-MORA CLA SS OF EXPONENTIAL-FAMILIES ON R(D)(3) G), Comptes rendus de l'Academie des sciences. Serie 1, Mathematique, 317(9), 1993, pp. 887-890
We describe the G-orbits of the Negative Multinomial-Hyperbolic distri
bution and of a Poisson-Gaussian distribution. Then we characterise th
e Morris-Mora class of natural exponential families as defined in [2].
We show in particular that it contains (d + 3) G-orbits.