00504naa#a2200169#i#450# EN\INFRA-M\bibl\13840 20241127144029.3 2305-7807 20161128b2016####ek#y0engy0150####ca RUS RU Gamification educational process as a tool of efficiency improvement Of learning Journal article Moscow INFRA-M Academic Publishing LLC. 2016 6 с. Journal article local Melnichuk Ju. naukaru.ru