00667naa#a2200181#i#450# EN\\bibl\131211 20260818132234.2 2686-7788 20260717b2026####ek#y0engy0150####ca RU VERTICAL AND HORIZONTAL MOBILITY OF STUDENT YOUTH IN MODERN RUSSIA: A THEORETICAL ANALYSIS Journal article Angarsk Federal State Funded Educational Establishment of Higher Education «Angarsk State Technical University» 2026 4 с. Journal article local Социология. 316 Sorokina Anna Ivanovna Leonova Victoria Vladimirovna angtu.editorum.ru