DRAGOMIR, S. S.; BARNETT, N. S. An Ostrowski Type Inequality for Mappings Whose Second Derivatives are Bounded and Applications. The Journal of the Indian Mathematical Society, [S. l.], v. 66, n. 1-4, p. 237–245, 1999. Disponível em: https://www.informaticsjournals.com/index.php/jims/article/view/22008. Acesso em: 7 may. 2024.