On the Investigation of Determinant Variables on Economic Growth Rate in Some African Countries using Panel Data Analysis Approach. Global Journal of Science Frontier Research, [S. l.], v. 15, n. F2, p. 9–18, 2015. Disponível em: https://www.journalofscience.org/index.php/GJSFR/article/view/1532. Acesso em: 14 aug. 2026.