Asymptotic Property of Approximation to $x^α$sgn$x$ by Newman Type Operators. Communications in Mathematical Research, [S. l.], v. 27, n. 3, p. 193–199, 2021. Disponível em: https://www.global-sci.com/index.php/cmr/article/view/8694. Acesso em: 6 dec. 2025.