@article{JLT_2013_23_4_JLT_2013_23_4_a4,
     author = {C. Luo and X. Xu },
     title = {Graded {Oscillator} {Generalizations} of the {Classical} {Theorem} on {Harmonic} {Polynomials}},
     journal = {Journal of Lie theory},
     pages = {979--1003},
     publisher = {mathdoc},
     volume = {23},
     number = {4},
     year = {2013},
     url = {http://geodesic.mathdoc.fr/item/JLT_2013_23_4_JLT_2013_23_4_a4/}
}