SEYHAN, H. ON THE ABSOLUTE SUMMABILITY FACTORS OF TYPE $(A, B)$. Tamkang Journal of Mathematics, [S. l.], v. 30, n. 1, p. 59–62, 1999. DOI: 10.5556/j.tkjm.30.1999.4208. Disponível em: https://journals.math.tku.edu.tw/index.php/TKJM/article/view/4208. Acesso em: 28 apr. 2024.