TY JOUR TI Investments in fixed capital as the main factor of regional economic development (on the example of the Republic of Tatarstan) KW fixed capital investments KW regional economic development KW Republic of Tatarstan KW economic diversification KW investment attractiveness. JO Russian Journal of Management AU Hayrullina, E.G. AU Ignatiev, V.G. PY 2025 IS 13 PB Publishing Center RIOR