00656naa#a2200181#i#450# EN\\bibl\95935 20250620220559.5 2782-4586 20250609b2025####ek#y0engy0150####ca RU Interregional Differentiation of Average Per Capita Income of the Population in the Russian Federation Journal article Moscow ITBO University 2025 9 с. Journal article local Экономические науки в целом. Политическая экономия. 330 Filippova Ekaterina Denisovna Shevtcov Daniil Andreevich jomeam.ru