00512naa#a2200169#i#450# EN\\bibl\30437 20240502223214.4 2542-1840 20190903b2019####ek#y0engy0150####ca RU Start of Employment Contract Journal article Kemerovo Kemerovo State University 2019 7 с. Journal article local Право. Юридические науки. 34 Kichigin Sergey Vladislavovich vestnik-hss.kemsu.ru