ABRISHAMI-MOGHADDAM, M. . On the triangle inequality in quasi 2-normed spaces and a new characterization of 2-inner product spaces. Scientific Journal of Pure and Applied Sciences, [S. l.], v. 3, n. 6, p. 433-437, 2014. Disponível em: http://sjournals.com/index.php/sjpas/article/view/875. Acesso em: 22 jul. 2024.