MUTAWAKILU, I. .; BELLO, N. .; AMINU, M. . A 〖(2n+9)〗^thDegree Polynomial Approximation Method for Solving Eight Order Linear Boundary Value Problems. International Journal of Science for Global Sustainability, [S. l.], v. 9, n. 2, p. 135–150, 2023. DOI: 10.57233/ijsgs.v9i2.468. Disponível em: https://fugus-ijsgs.com.ng/index.php/ijsgs/article/view/468. Acesso em: 20 aug. 2026.