00446naa#a2200169#i#450# EN\INFRA-M\bibl\6198 20241014190438.1 1998-0744 20150617b2015####ek#y0engy0150####ca RUS RU E-Learning Course Structure Journal article Moscow INFRA-M Academic Publishing LLC. 2015 4 с. Journal article local Shulga I. naukaru.ru