KARSLI, Harun. Some approximation properties of Urysohn type nonlinear operators. Studia Universitatis Babeș-Bolyai Mathematica, [S. l.], v. 64, n. 2, p. 183–196, 2019. DOI: 10.24193/subbmath.2019.2.05. Disponível em: https://studia.reviste.ubbcluj.ro/index.php/subbmathematica/article/view/2257. Acesso em: 5 feb. 2025.