LAL, S.; MISHRA, A. Approximation of functions of class $Lip(\alpha,r), (r\geq1)$ by $(N,p_n)(E,1)$ summability means of Fourier series. Tamkang Journal of Mathematics, [S. l.], v. 45, n. 3, p. 243–250, 2014. DOI: 10.5556/j.tkjm.45.2014.876. Disponível em: https://journals.math.tku.edu.tw/index.php/TKJM/article/view/876. Acesso em: 29 apr. 2024.