%0 Journal Article %A X. Xu %T A Cubic E6-Generalization of the Classical Theorem on Harmonic Polynomials %J Journal of Lie theory %D 2011 %P 145-164 %V 21 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/JLT_2011_21_1_JLT_2011_21_1_a6/ %F JLT_2011_21_1_JLT_2011_21_1_a6