Pavel, G. “Approximate Solution of a Cauchy Problem by Means of the Computer”. Anal. Numér. Théor. Approx. 4, no. 2 (August 1, 1975): 153–156. Accessed November 23, 2024. https://ictp.acad.ro/jnaat/journal/article/view/1975-vol4-no2-art5.