DRAGOMIR, S.; SOFO, A. On some inequalities of Cauchy-Bunyakousky-Schwarz type and applications. Tamkang Journal of Mathematics, [S. l.], v. 39, n. 4, p. 291-302, 2008. DOI: 10.5556/j.tkjm.39.2008.2. Disponível em: https://journals.math.tku.edu.tw/index.php/TKJM/article/view/2. Acesso em: 19 sep. 2021.