OGUNNIRAN, M. O.; TIJANI, N. A.; ADEDOKUN, K. A.; O.KAREEM, K. O. An accurate hybrid block technique for second order singular problems in ordinary differential equations. African Journal of Pure and Applied Sciences, Nairobi, Kenya, v. 3, n. 1, p. 144–154, 2022. DOI: 10.33886/ajpas.v3i1.257. Disponível em: https://journal.ku.ac.ke/index.php/AJPAS/article/view/257. Acesso em: 1 aug. 2026.