BIROU, Marius Mihai. Sharp inequalities for the rates of convergence of the iterates of some operators which preserve the constants. Studia Universitatis Babeș-Bolyai Mathematica, [S. l.], v. 66, n. 2, p. 289–295, 2021. DOI: 10.24193/subbmath.2021.2.05. Disponível em: https://studia.reviste.ubbcluj.ro/index.php/subbmathematica/article/view/1300. Acesso em: 11 feb. 2025.