Kropyvnytska, Vitaliai, Lev Kopystynskyy, and Georgiy Sementsov. “Development of a Set of Methods for Preforecasting Fractal Time Series Analysis to Determine the Level of Persistence”. Eastern-European Journal of Enterprise Technologies 3, no. 4 (87) (June 30, 2017): 10–17. Accessed February 9, 2026. https://journals.uran.ua/eejet/article/view/104425.