DUTTA, Sudipta; GHOSH, Rima. Korovkin type approximation on an infinite interval via generalized matrix summability method using ideal. Studia Universitatis Babeș-Bolyai Mathematica, [S. l.], v. 65, n. 2, p. 243–254, 2020. DOI: 10.24193/subbmath.2020.2.06. Disponível em: https://studia.reviste.ubbcluj.ro/index.php/subbmathematica/article/view/2539. Acesso em: 5 feb. 2025.