00545naa#a2200169#i#450# EN\NORMA\bibl\42754 20241201225116.7 1605-6590 20210322b2021####ek#y0engy0150####ca RU Educational Migration in Russia: Conceptual Issues of Legal Regulation Journal article Moscow Legal publishing house Norm 2021 0 с. Journal article local Право. Юридические науки. 34 Shitova Natal'ya Borisovna naukaru.ru