@article{05304385, title = {Horoballs in simplices and Minkowski spaces.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {2006}, year = {2006}, doi = {10.1155/IJMMS/2006/23656}, zbl = {1144.52016}, language = {en}, url = {http://dml.mathdoc.fr/item/05304385} }
Karlsson, A.; Metz, V.; Noskov, G.A. Horoballs in simplices and Minkowski spaces.. International Journal of Mathematics and Mathematical Sciences, Tome 2006 (2006) . doi : 10.1155/IJMMS/2006/23656. http://gdmltest.u-ga.fr/item/05304385/