TRIFA, Sorin. Approximation with an arbitrary order by generalized Kantorovich-type and Durrmeyer-type operators on [0, +∞). Studia Universitatis Babeș-Bolyai Mathematica, [S. l.], v. 62, n. 4, p. 479–494, 2017. DOI: 10.24193/subbmath.2017.4.07. Disponível em: https://studia.reviste.ubbcluj.ro/index.php/subbmathematica/article/view/1913. Acesso em: 5 feb. 2025.