YAKUBU, G. D.; MOHAMMED GAZALI, A. TWO-STEP RUNGE-KUTTA METHODS FOR THE NUMERICAL INTEGRATION OF NONLINEAR SINGULAR AND SINGULARLY PERTURBED IVPs: TWO-STEP RUNGE-KUTTA METHODS . Journal of the Nigerian Mathematical Society, [S. l.], v. 44, n. 2, p. 153–188, 2025. Disponível em: https://ojs.ictp.it/jnms/index.php/jnms/article/view/1168. Acesso em: 12 jul. 2025.