CHAVARRIGA, Javier; GRAU, Maite. Some open problems related to 16b Hilbert problem. Scientia Series A: Mathematical Sciences, [S. l.], v. 9, p. 1–26, 2025. DOI: 10.71712/. Disponível em: https://revistas.usm.cl/scientia/article/view/238.. Acesso em: 19 aug. 2025.