00503naa#a2200169#i#450# EN\\bibl\72177 20250519211914.1 2500-3372 20231214b2023####ek#y0engy0150####ca ENG RU Economic Contribution of International Students (Case of the Russian Federation) Journal article Kemerovo Kemerovo State University 2023 9 с. Journal article local Afzali Mehdi vestnik-bees.kemsu.ru