Convergence and Stability of Optimal Two-step Fourth-order and its Expanding to Sixth Order for Solving Nonlinear Equations. European Journal of Pure and Applied Mathematics, Maryland, USA, v. 15, n. 3, p. 971–991, 2022. DOI: 10.29020/nybg.ejpam.v15i3.4397. Disponível em: https://ejpam.com/index.php/ejpam/article/view/4397.. Acesso em: 2 may. 2024.