BALABA, Irina N.; MIKHALEV, Alexander V. Graded Division Rings. Sarajevo Journal of Mathematics, [S. l.], v. 14, n. 2, p. 167–174, 2019. Disponível em: https://sjm.anubih.ba/index.php/sjm/article/view/71. Acesso em: 18 jan. 2025.