ALI AL-JUBOURY, H. Estimation of the error of Runge-Kutta’s method in multivariate case. Ann. Sofia Univ. Fac. Math. and Inf., [S. l.], v. 83, n. 1, p. 81–88, 1992. Disponível em: https://admin.uni-sofia.bg/index.php/fmi/article/view/488. Acesso em: 16 jan. 2025.