J. N. Onyeka-Ubaka, R. K. Ogundeji, and R. U. Okafor, “Time Series Filters Applied to Improve Box-Jenkins Forecasting Approach”, BJS, vol. 4, no. 1, pp. 31– 52, Dec. 2021, Accessed: Apr. 22, 2026. [Online]. Available: https://bjs-uniben.org/index.php/home/article/view/35