BIROU, Marius. Discrete operators associated with the Durrmeyer operator. Studia Universitatis Babeș-Bolyai Mathematica, [S. l.], v. 60, n. 2, p. 295–302, 2015. Disponível em: https://studia.reviste.ubbcluj.ro/index.php/subbmathematica/article/view/5738. Acesso em: 5 feb. 2025.