Mutawakilu, Ibrahim, Nakone Bello, and Mustafa Aminu. “A 〖(2n+9)〗^thDegree Polynomial Approximation Method for Solving Eight Order Linear Boundary Value Problems”. International Journal of Science for Global Sustainability 9, no. 2 (July 31, 2023): 135–150. Accessed August 20, 2026. https://www.fugus-ijsgs.com.ng/index.php/ijsgs/article/view/468.