George, Santhosh, and Ioannis K Argyros. “Extending the Radius of Convergence for a Class of Euler-Halley Type Methods”.
J. Numer. Anal. Approx. Theory 48, no. 2 (December 31, 2019): 137–143. Accessed April 8, 2025.
https://ictp.acad.ro/jnaat/journal/article/view/1115.