SZAL, B.; LENSKI, W. Pointwise approximation of modified conjugate functions by matrix operators of their Fourier series with the use of some parameters. Tamkang Journal of Mathematics, [S. l.], v. 51, n. 2, p. 145-159, 2020. DOI: 10.5556/j.tkjm.51.2020.3080. Disponível em: https://journals.math.tku.edu.tw/index.php/TKJM/article/view/3080. Acesso em: 26 sep. 2020.