YANG, G.-S.; WANG, C.-S. ON REFINEMENTS OF HADAMARD’S INEQUALITIES. Tamkang Journal of Mathematics, [S. l.], v. 28, n. 3, p. 183–191, 1997. DOI: 10.5556/j.tkjm.28.1997.4313. Disponível em: https://journals.math.tku.edu.tw/index.php/TKJM/article/view/4313. Acesso em: 7 dec. 2022.