Argyros, I., S. M. Shakhno, Y. Shunkin, and H. Yarmola. “Extended Convergence Analysis of Newton-Potra Solver for Equations”. J. Numer. Anal. Approx. Theory, vol. 49, no. 2, Feb. 2021, pp. 100-12, https://ictp.acad.ro/jnaat/journal/article/view/1186.