PROKIP, V. M. On Multiplicativity of Canonical Diagonal Forms of Matrices over the Domain of Principal Ideals. II. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 53, n. 2, p. 274–277, 2001. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/4246. Acesso em: 5 dec. 2025.