00594naa#a2200181#i#450# EN\\bibl\69419 20241106231954.3 2500-3372 20230811b2023####ek#y0engy0150####ca RU Development Trends of Private Investors’ Portfolio Investment Market in the Russian Federation Journal article Kemerovo Kemerovo State University 2023 7 с. Journal article local Trufanova Anastasiya Andreevna Kalacheva Irina Vladimirovna Tihonova Alina Vladimirovna zh-szf.ru