HWANG, D.-Y. GENERALIZATIONS OF COPSON’S INEQUALITITS INVOLVING SERIES OF POSITIVE TERMS. Tamkang Journal of Mathematics, [S. l.], v. 29, n. 1, p. 29–39, 1998. DOI: 10.5556/j.tkjm.29.1998.4296. Disponível em: https://journals.math.tku.edu.tw/index.php/TKJM/article/view/4296. Acesso em: 3 jul. 2024.