DHAGE, B. C. Local fixed point theory involving three operators in Banach algebras. Topological Methods in Nonlinear Analysis, [S. l.], v. 24, n. 2, p. 377–386, 2004. Disponível em: https://apcz.umk.pl/TMNA/article/view/TMNA.2004.033. Acesso em: 22 jul. 2024.