PACHPATTE, B. G. New inequalities of Ostrowski type for twice differentiable mappings. Tamkang Journal of Mathematics, [S. l.], v. 35, n. 3, p. 219–226, 2004. DOI: 10.5556/j.tkjm.35.2004.202. Disponível em: https://journals.math.tku.edu.tw/index.php/TKJM/article/view/202. Acesso em: 19 apr. 2024.