Nikita I. Lysenok (2026) “VOLATILITY FORECASTING FROM ECONOMETRICS TO ARTIFICIAL INTELLIGENCE: A FOUR-STAGE REVIEW OF THE EVIDENCE PIPELINE FROM FORECAST ACCURACY TO PORTFOLIO PERFORMANCE”, International Journal of Computer Information Systems and Industrial Management Applications, 18(18s), pp. 1406–1430. doi: 10.70917/ijcisim-2026-4990.