Ferreira JC, Silva NR. About eigenvalues ​​and zeros of polynomials and optimization problems: a synthesis and demonstrations. Sigmae [Internet]. 2019 Aug. 19 [cited 2024 Nov. 26];8(1):1-15. Available from: https://publicacoes.unifal-mg.edu.br/revistas/index.php/sigmae/article/view/637