TY JOUR TI Forecast modeling of the dynamics of the main indicators of the federal budget of the Russian Federation for 2026 KW predictive modeling KW dynamics KW key indicators KW federal budget KW Russian Federation KW 2026 JO Journal of Management Studies AU Tebekin, A.V. AU Petrov, V.S. PY 2026 IS 12 PB INFRA-M Academic Publishing LLC.