00552naa#a2200169#i#450# EN\\bibl\47324 20240420034958.6 2500-3372 20211122b2021####ek#y0engy0150####ca RU Motivation of Olympic Volunteers in Russia and China Journal article Kemerovo Kemerovo State University 2021 7 с. Journal article local Статистика. Демография. Социология. 31 Suhar'kova Marina Petrovna vestnik-pses.kemsu.ru