Umoh, Idongesit Michael. “GARCH and SARIMA Modelling of Nigerian Narrow Money”. Faculty of Natural and Applied Sciences Journal of Scientific Innovations 5, no. 2 (December 30, 2023): 122–128. Accessed January 26, 2026. https://www.fnasjournals.com/index.php/FNAS-JSI/article/view/226.