@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/