Rudnitsky, V., V. Larin, O. Melnyk, and D. Pidlasy. “Discrete-Casual Presentation of Models of Elementary Functions and Set Operations”. Control, Navigation and Communication Systems. Academic Journal, Vol. 4, no. 74, PNTU, Dec. 2023, pp. 96-01, doi:https://doi.org/10.26906/SUNZ.2023.4.096.