KERMAUSUOR, S.; NWAEZE, E. R. New Ostrowski and Ostrowski-Gruss type inequalities for double integrals on time scales involving a combination of $\Delta$-integral means. Tamkang Journal of Mathematics, [S. l.], v. 49, n. 4, p. 277–289, 2018. DOI: 10.5556/j.tkjm.49.2018.2632. Disponível em: https://journals.math.tku.edu.tw/index.php/TKJM/article/view/2632. Acesso em: 3 may. 2024.