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 April 11, 2025.
https://ictp.acad.ro/jnaat/journal/article/view/1975-vol4-no2-art5
.