TRENČEVSKI, Kostadin; JANEVA, Biljana. UNITS IN VECTOR VALUED GROUPS. Matematichki Bilten, [S. l.], v. 28, n. 1, p. 113–124, 2004. Disponível em: https://bilten.smm.org.mk/index.php/bilten/article/view/1705. Acesso em: 14 aug. 2026.