TY - JOUR AU - S. I. Kalinin TI - Ki Fan inequality could be discovered much formerly JO - Matematičeskoe obrazovanie PY - 2017 SP - 25 EP - 27 VL - 84 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MO_2017_84_4_a4/ LA - ru ID - MO_2017_84_4_a4 ER -