TY JOUR TI Reliability and stability of the banking system and the role of the Bank of Russia KW monetary and financial crisis KW systemic crisis KW rental priorities KW gold and foreign exchange reserves KW lender of last resort KW reserve currency KW gold KW devaluation KW inflation KW portfolio approach KW optimization KW financial risks. JO Journal of economic studies AU Bratischeva, E.N. PY 2025 IS 11 PB INFRA-M Academic Publishing LLC.