Forecasting of Monthly Naira-Dollar Exchange Rate Series: Seasonal or Non-seasonal Univariate Time Series Model?. International Journal of Development Mathematics (IJDM), [S. l.], v. 2, n. 1, p. 228–243, 2025. DOI: 10.62054/ijdm/0201.18. Disponível em: https://ijdm.org.ng/index.php/Journals/article/view/130.. Acesso em: 12 jul. 2026.