00517naa#a2200181#i#450# EN\INFRA-M\bibl\2128 20241126140019.2 1998-0744 20140417b2014####ek#y0engy0150####ca RUS RU Methodology of Training for Academic Olympics at School Journal article Moscow INFRA-M Academic Publishing LLC. 2014 11 с. Journal article local Tsvetkova Marina S. Kiryukhin V. M. naukaru.ru