On approximation of signals in Lip(α,r)-class using the product (N, pn,qn)(E,s)- summability means of conjugate Fourier series: On approximation of signals in $Lip(\alpha,r)$-class... Nonlinear Studies, [S. l.], v. 27, n. 2, 2020. Disponível em: https://www.nonlinearstudies.com/index.php/nonlinear/article/view/1575. Acesso em: 18 sep. 2025.