SINENKO , M. A. Optimal convergence velocity of V. I. Lebedev’s method on certain classes of operator equations . Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 44, n. 4, p. 541–547, 1992. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/7896. Acesso em: 5 dec. 2025.