LIU, Z. New generalization of H. Alzer’s inequality. Tamkang Journal of Mathematics, [S. l.], v. 34, n. 3, p. 255–260, 2003. DOI: 10.5556/j.tkjm.34.2003.318. Disponível em: https://journals.math.tku.edu.tw/index.php/TKJM/article/view/318. Acesso em: 8 may. 2024.