@article{JLT_1998_8_2_a3,
     author = {E. Casadio Tarabusi and J. M. Cohen and A. Koranyi and M. A. Picardello},
     title = {Converse {Mean} {Value} {Theorems} on {Trees} and {Symmetric} {Spaces}},
     journal = {Journal of Lie theory},
     pages = {229--254},
     publisher = {mathdoc},
     volume = {8},
     number = {2},
     year = {1998},
     url = {http://geodesic.mathdoc.fr/item/JLT_1998_8_2_a3/}
}