00613naa#a2200193#i#450# EN\\bibl\91086 20250510202459.6 2221-3260 20241031b2024####ek#y0engy0150####ca RU Educational migration and its causes: a theoretical analysis Journal article Yaroslavl Yaroslavl State Technical University 2024 8 с. Journal article local Toshpulotov Alisher Aminovich Surina Elena Alekseevna Matveeva Inna Vladimirovna Marikyan Ekaterina Andreevna chemintech.ru