PACHPATTE, B. G. A note on certain integral inequality. Tamkang Journal of Mathematics, [S. l.], v. 33, n. 4, p. 353–358, 2002. DOI: 10.5556/j.tkjm.33.2002.283. Disponível em: https://journals.math.tku.edu.tw/index.php/TKJM/article/view/283. Acesso em: 18 jul. 2024.