Derivation of Four-Point Integrator for the Solutions of Second-order Oscillatory Problems. International Journal of Development Mathematics (IJDM), [S. l.], v. 1, n. 4, p. 001–019, 2024. DOI: 10.62054/ijdm/0104.01. Disponível em: https://ijdm.org.ng/index.php/Journals/article/view/126.. Acesso em: 27 jul. 2026.