@article{GDZPPN002354454,
title = {Harmonic and polyharmonic degeneracy.},
journal = {Mathematica Scandinavica},
volume = {40},
year = {1977},
pages = {288-292},
zbl = {0367.31003},
url = {http://dml.mathdoc.fr/item/GDZPPN002354454}
}
Sario, L.; Chung, L.O.; Wang, C. Harmonic and polyharmonic degeneracy.. Mathematica Scandinavica, Tome 40 (1977) pp. 288-292. http://gdmltest.u-ga.fr/item/GDZPPN002354454/