A new Sixth-Order Runge - Kutta - Nystro ̈m Method for Special Second Order Ordinary Differential Equations. Journal of Pure & Applied Sciences , [S. l.], v. 20, n. 4, p. 72–75, 2021. DOI: 10.51984/jopas.v20i4.1685. Disponível em: https://www.sebhau.edu.ly/journal/jopas/article/view/1685. Acesso em: 30 jan. 2026.