SULAIMAN, W. T. ON ABSOLUTE NÖRLUND SUMMABILITY OF FOURIER SERIES AND THE DERIVED FOURIER SERIES. Tamkang Journal of Mathematics, [S. l.], v. 21, n. 1, p. 79–87, 1990. DOI: 10.5556/j.tkjm.21.1990.4698. Disponível em: https://journals.math.tku.edu.tw/index.php/TKJM/article/view/4698. Acesso em: 26 apr. 2024.