A. NAJAFIZADEH; A. M. AGHDAM. Rings on Torsion-Free Groups of Rank One and Two. Jordan Journal of Mathematics and Statistics, [S. l.], v. 8, n. 2, p. 121–154, 2025. Disponível em: https://jjms.yu.edu.jo/index.php/jjms/article/view/1063. Acesso em: 3 oct. 2025.