SALEM, R. M. SKEW POLYNOMIAL RINGS SATISFYING $R$-BND PROPERTY. Tamkang Journal of Mathematics, [S. l.], v. 23, n. 2, p. 109–116, 1992. DOI: 10.5556/j.tkjm.23.1992.4533. Disponível em: https://journals.math.tku.edu.tw/index.php/TKJM/article/view/4533. Acesso em: 3 may. 2024.