FERREIRA, José Claudinei; SILVA, Natally Rodrigues. About eigenvalues ​​and zeros of polynomials and optimization problems: a synthesis and demonstrations. Sigmae, [S. l.], v. 8, n. 1, p. 1–15, 2019. Disponível em: https://publicacoes.unifal-mg.edu.br/revistas/index.php/sigmae/article/view/637. Acesso em: 3 may. 2024.