AASHITA KESARWANI; V. H. MOLL. Sums of four or fewer squares. Scientia Series A: Mathematical Sciences, [S. l.], v. 28, p. 55–62, 2025. DOI: 10.71712/. Disponível em: https://revistas.usm.cl/scientia/article/view/200.. Acesso em: 19 aug. 2025.