@article{GDZPPN002033100,
title = {Functions satisfying a discrete mean value property.},
journal = {Aequationes mathematicae},
volume = {22},
year = {1981},
pages = {173-193},
zbl = {0486.31005},
url = {http://dml.mathdoc.fr/item/GDZPPN002033100}
}
Flatto, L.; Jacobson, D. Functions satisfying a discrete mean value property.. Aequationes mathematicae, Tome 22 (1981) pp. 173-193. http://gdmltest.u-ga.fr/item/GDZPPN002033100/