Onyeka-Ubaka, J. N., R. K. Ogundeji, and R. U. Okafor. “Time Series Filters Applied to Improve Box-Jenkins Forecasting Approach”. Benin Journal of Statistics 4, no. 1 (December 1, 2021): 31– 52. Accessed April 22, 2026. https://bjs-uniben.org/index.php/home/article/view/35.