TY - JOUR AU - L. N. Romakina TI - The theorem of the area of a rectangular trihedral of the hyperbolic plane of positive curvature JO - Dalʹnevostočnyj matematičeskij žurnal PY - 2013 SP - 127 EP - 147 VL - 13 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DVMG_2013_13_1_a11/ LA - ru ID - DVMG_2013_13_1_a11 ER -