TY - JOUR AU - V. I. Voytitsky TI - Functional mean values of a set of real numbers, their comparison and properties JO - Matematičeskoe obrazovanie PY - 2017 SP - 12 EP - 19 IS - 4 UR - http://geodesic.mathdoc.fr/item/MO_2017_4_a2/ LA - ru ID - MO_2017_4_a2 ER -