MIR, N. A.; ULLAH, R. Some inequalities of Ostrowski and Grüss type for triple integrals on time scales. Tamkang Journal of Mathematics, [S. l.], v. 42, n. 4, p. 415–426, 2011. DOI: 10.5556/j.tkjm.42.2011.685. Disponível em: https://journals.math.tku.edu.tw/index.php/TKJM/article/view/685. Acesso em: 3 oct. 2022.