MALČESKI, Aleksa. NOTICES FOR THE DEFINITION ON 2-NORMED SPACE. Matematichki Bilten, [S. l.], v. 26, n. 1, p. 55–60, 2002. Disponível em: https://bilten.smm.org.mk/index.php/bilten/article/view/1674. Acesso em: 14 aug. 2026.