00564naa#a2200181#i#450# EN\INFRA-M\bibl\64719 20240430134848.2 2500-0500 20230528b2023####ek#y0engy0150####ca RU Problems of legal regulation of freelance Journal article Moscow INFRA-M Academic Publishing LLC. 2023 3 с. Journal article local Демография. Социология. Статистика. 31 Semenova V. V. Kochergina A. A. naukaru.ru