%0 Journal Article %A T. Branson %T Spectra of Self-Gradients on Spheres %J Journal of Lie theory %D 1999 %P 491-506 %V 9 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/JLT_1999_9_2_a14/ %F JLT_1999_9_2_a14