MAZKO , A. G. Semi-inversion and properties of matrices invariants. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 40, n. 4, p. 525–528, 1988. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/9192. Acesso em: 6 dec. 2025.