Generalization of an Eneström-Kakeya type theorem to the quaternions. Armenian Journal of Mathematics, [S. l.], v. 14, n. 9, p. 1–8, 2022. DOI: 10.52737/18291163-2022.14.9-1-8. Disponível em: https://armjmath.sci.am/index.php/ajm/article/view/651.. Acesso em: 3 may. 2024.