KOSTOV, Vladimir. On a problem inspired by Descartes’ rule of signs. Modern Mathematical Methods, [S. l.], v. 2, n. 2, p. 103–116, 2024. DOI: 10.64700/mmm.38. Disponível em: https://modernmathmeth.com/index.php/pub/article/view/38. Acesso em: 18 sep. 2025.