PACHPATTE, B. G. A NOTE ON CERTAIN MULTIVARIATE INTEGRAL INEQUALITIES. Tamkang Journal of Mathematics, [S. l.], v. 24, n. 1, p. 107–114, 1993. Disponível em: https://journals.math.tku.edu.tw/index.php/TKJM/article/view/4480. Acesso em: 19 aug. 2022.