TY - JOUR AU - V. A. Krasnov AU - E. Sh. Khisyametdinova TI - On the volume formula for a~hyperbolic octahedron with $\mathrm{mm2}$-symmetry JO - Contemporary Mathematics. Fundamental Directions PY - 2016 SP - 103 EP - 114 VL - 61 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/CMFD_2016_61_a3/ LA - ru ID - CMFD_2016_61_a3 ER -