BAKAN, A. G.; HOLUB, A. P. On sequences that do not increase the number of real roots of polynomials. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 45, n. 10, p. 1323–1331, 1993. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/5937. Acesso em: 5 dec. 2025.