Argyros, Ioannis K. “Newton’s Method and Regularly Smooth Operators”. Rev. Anal. Numér. Théor. Approx. 40, no. 1 (February 1, 2011): 3–13. Accessed April 14, 2025. https://ictp.acad.ro/jnaat/journal/article/view/2011-vol40-no1-art1.