ARGYROS, I. K. ON AN APPLICATION OF A VARIANT OF THE CLOSED GRAPH THEOREM AND THE SECANT METHOD. Tamkang Journal of Mathematics, [S. l.], v. 24, n. 3, p. 251–267, 1993. DOI: 10.5556/j.tkjm.24.1993.4496. Disponível em: https://journals.math.tku.edu.tw/index.php/TKJM/article/view/4496. Acesso em: 3 may. 2024.