CHEN, C.-P.; QI, F. Note on Alzer’s inequality. Tamkang Journal of Mathematics, [S. l.], v. 37, n. 1, p. 11–14, 2006. DOI: 10.5556/j.tkjm.37.2006.175. Disponível em: https://journals.math.tku.edu.tw/index.php/TKJM/article/view/175. Acesso em: 5 jul. 2022.