@article{SEMR_2009_6_a11,
     author = {N. V. Abrosimov},
     title = {Solving the {Seidel} problem on the volume of hyperbolic tetrahedron},
     journal = {Sibirskie \`elektronnye matemati\v{c}eskie izvesti\^a},
     pages = {211--218},
     publisher = {mathdoc},
     volume = {6},
     year = {2009},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/SEMR_2009_6_a11/}
}