UMOH, Idongesit Michael. GARCH and SARIMA modelling of Nigerian narrow money. Faculty of Natural and Applied Sciences Journal of Scientific Innovations , Port Harcourt, Nigeria, v. 5, n. 2, p. 122–128, 2023. Disponível em: https://www.fnasjournals.com/index.php/FNAS-JSI/article/view/226. Acesso em: 26 jan. 2026.