OTAKE, Shuichi; SHASKA, Tony. Some remarks on the non-real roots of polynomials. CUBO, A Mathematical Journal, [S. l.], v. 20, n. 2, p. 67–93, 2018. DOI: 10.4067/S0719-06462018000200067. Disponível em: https://cubo.ufro.cl/index.php/cubo/article/view/2051. Acesso em: 13 oct. 2025.