BELOUSOV, K. I.; NAZAROVA, L. A.; ROITER, A. V.; SERGEYCHUK, V. V. Elementary and multielementary representations of vectroids. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 47, n. 11, p. 1451–1477, 1995. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/5537. Acesso em: 6 dec. 2025.