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@article{MS2_1977__40_166534, author = {L. Sario and L.O. Chung and C. Wang}, title = {Harmonic and polyharmonic degeneracy.}, journal = {Mathematica Scandinavica}, pages = {288--292}, publisher = {mathdoc}, volume = {40}, year = {1977}, zbl = {0367.31003}, url = {http://geodesic.mathdoc.fr/item/MS2_1977__40_166534/} }
L. Sario; L.O. Chung; C. Wang. Harmonic and polyharmonic degeneracy.. Mathematica Scandinavica, Tome 40 (1977), pp. 288-292. http://geodesic.mathdoc.fr/item/MS2_1977__40_166534/