PACHPATTE, B. G. A note on a certain retarded integral inequality. Tamkang Journal of Mathematics, [S. l.], v. 36, n. 4, p. 319–325, 2005. DOI: 10.5556/j.tkjm.36.2005.104. Disponível em: https://journals.math.tku.edu.tw/index.php/TKJM/article/view/104. Acesso em: 20 apr. 2024.