@article{1028990180,
author = {Friedman, Avner},
title = {Mean-values and polyharmonic polynomials.},
journal = {Michigan Math. J.},
volume = {4},
number = {2},
year = {1957},
pages = { 67-74},
language = {en},
url = {http://dml.mathdoc.fr/item/1028990180}
}
Friedman, Avner. Mean-values and polyharmonic polynomials.. Michigan Math. J., Tome 4 (1957) no. 2, pp. 67-74. http://gdmltest.u-ga.fr/item/1028990180/