00595naa#a2200181#i#450# EN\INFRA-M\bibl\29993 20240705065958.5 2500-333X 20190716b2019####ek#y0engy0150####ca RUS RU Extension of a fixed-term employment contract: some theoretical and practical issues Journal article Moscow INFRA-M Academic Publishing LLC. 2019 7 с. Journal article local Право. Юридические науки. 34 RUS Kichigin Sergey Vladislavovich zh-szf.ru