IZUMINO, S.; PECARIC, J.; TEPES, B. Integral versions of some Gr"uss type inequality. Tamkang Journal of Mathematics, [S. l.], v. 36, n. 2, p. 103–110, 2005. DOI: 10.5556/j.tkjm.36.2005.122. Disponível em: https://journals.math.tku.edu.tw/index.php/TKJM/article/view/122. Acesso em: 23 apr. 2024.