ANASTASSIOU, George. Approximation by symmetrized and perturbed hyperbolic tangent activated convolutions as positive linear operators. Modern Mathematical Methods, [S. l.], v. 3, n. 2, p. 72–84, 2025. DOI: 10.64700/mmm.73. Disponível em: https://modernmathmeth.com/index.php/pub/article/view/73. Acesso em: 30 aug. 2025.