CHO, Y. J.; MATIC, M.; PECARIC, J. Popoviciu’s and Bellman’s inequalities in $p$-semi-inner product spaces. Tamkang Journal of Mathematics, [S. l.], v. 33, n. 4, p. 309-318, 2002. DOI: 10.5556/j.tkjm.33.2002.279. Disponível em: https://journals.math.tku.edu.tw/index.php/TKJM/article/view/279. Acesso em: 18 oct. 2021.