@article{01133013,
title = {Crofton formulae and geodesic distance in hyperbolic spaces.},
journal = {Journal of Lie Theory},
volume = {8},
year = {1998},
pages = {163-172},
zbl = {0891.43005},
language = {en},
url = {http://dml.mathdoc.fr/item/01133013}
}
Robertson, Guyan. Crofton formulae and geodesic distance in hyperbolic spaces.. Journal of Lie Theory, Tome 8 (1998) pp. 163-172. http://gdmltest.u-ga.fr/item/01133013/