@article{01211701,
title = {Converse mean value theorems on trees and symmetric spaces.},
journal = {Journal of Lie Theory},
volume = {8},
year = {1998},
pages = {229-254},
zbl = {0947.43005},
language = {en},
url = {http://dml.mathdoc.fr/item/01211701}
}
Casadio Tarabusi, Enrico; Cohen, Joel M.; Korányi, Adam; Picardello, Massimo A. Converse mean value theorems on trees and symmetric spaces.. Journal of Lie Theory, Tome 8 (1998) pp. 229-254. http://gdmltest.u-ga.fr/item/01211701/