@article{02239532,
title = {On the volume of a symmetric tetrahedron in hyperbolic and spherical spaces.},
journal = {Sibirskij Matematicheskij Zhurnal},
volume = {45},
year = {2004},
pages = {1022-1031},
zbl = {1081.51012},
language = {en},
url = {http://dml.mathdoc.fr/item/02239532}
}
Derevnin, D.A.; Mednykh, A.D.; Pashkevich, M.G. On the volume of a symmetric tetrahedron in hyperbolic and spherical spaces.. Sibirskij Matematicheskij Zhurnal, Tome 45 (2004) pp. 1022-1031. http://gdmltest.u-ga.fr/item/02239532/