00511naa#a2200181#i#450# EN\INFRA-M\bibl\6348 20260121043355.3 2306-1731 20150617b2015####ek#y0engy0150####ca RUS RU Modern Online Education in Russia: Problems And Prospects Journal article Moscow INFRA-M Academic Publishing LLC. 2015 2 с. Journal article local Pronin E. Polozhentseva I. naukaru.ru