00498naa#a2200169#i#450# EN\INFRA-M\bibl\2071 20241107084627.4 2587-9111 20140417b2014####ek#y0engy0150####ca RUS RU Problem of Electronic Commerce in Russia: Electronic Signature Journal article Moscow INFRA-M Academic Publishing LLC. 2014 8 с. Journal article local Shvetsov Sergey Alekseevich naukaru.ru