RHOADES, B. E.; SAVACS, E. On absolute Norlund summability of Fourier series. Tamkang Journal of Mathematics, [S. l.], v. 33, n. 4, p. 359–364, 2002. DOI: 10.5556/j.tkjm.33.2002.284. Disponível em: https://journals.math.tku.edu.tw/index.php/TKJM/article/view/284. Acesso em: 22 dec. 2024.