PACHPATTE, B. G. A NOTE ON SOME SERIES INEQUALITIES. Tamkang Journal of Mathematics, [S. l.], v. 27, n. 1, p. 77–79, 1996. DOI: 10.5556/j.tkjm.27.1996.4364. Disponível em: https://journals.math.tku.edu.tw/index.php/TKJM/article/view/4364. Acesso em: 19 apr. 2024.