LI, C.-K.; TSING, N.-K. NORMS ON CARTESIAN PRODUCT OF LINEAR SPACES. Tamkang Journal of Mathematics, [S. l.], v. 21, n. 1, p. 35–39, 1990. DOI: 10.5556/j.tkjm.21.1990.4692. Disponível em: https://journals.math.tku.edu.tw/index.php/TKJM/article/view/4692. Acesso em: 25 apr. 2024.