00475naa#a2200169#i#450# EN\INFRA-M\bibl\10557 20241223081354.1 2306-627X 20150917b2015####ek#y0engy0150####ca RUS RU The Value of E-commerce for the Country Economy Journal article Moscow INFRA-M Academic Publishing LLC. 2015 4 с. Journal article local Sigarev Aleksandr naukaru.ru