ROSLI, Norhayati; WAN AHMAD, Wan Muhamad Amir. A Matrix Variance Inequality for k-Functions . MATEMATIKA, [S. l.], v. 23, p. 1–8, 2007. DOI: 10.11113/matematika.v23.n.383. Disponível em: https://matematika.utm.my/index.php/matematika/article/view/383. Acesso em: 8 may. 2024.