Estimators of Linear Regression Model with Non-Spherical Disturbance: Evidence from Nigerian Inflation-Trend and Economic Time Series Data. International Journal of Development Mathematics (IJDM), [S. l.], v. 2, n. 4, p. 262–272, 2025. DOI: 10.62054/ijdm/0204.19. Disponível em: https://ijdm.org.ng/index.php/Journals/article/view/272.. Acesso em: 28 aug. 2026.