TY - JOUR AU - V. N. Novikov TI - On inequalities in a tetrahedron, finished JO - Matematičeskoe obrazovanie PY - 2021 SP - 58 EP - 69 VL - 99 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MO_2021_99_3_a6/ LA - ru ID - MO_2021_99_3_a6 ER -