PROKIP, V.M. On the similarity of matrices $AB$ and $BA$ over a field. Carpathian Mathematical Publications, [S. l.], v. 10, n. 2, p. 352–359, 2018. DOI: 10.15330/cmp.10.2.352-359. Disponível em: https://journals.pnu.edu.ua/index.php/cmp/article/view/1495. Acesso em: 28 apr. 2024.