PHAM, T. C. THE PROLONGATION PROBLEM OF RING EXTENSIONS. Hong Duc University Journal of Science, [S. l.], v. 79, n. 09, [s.d.]. DOI: 10.70117/hdujs.79.09.2025.836. Disponível em: https://hdujs.edu.vn/index.php/hdujs/article/view/836. Acesso em: 13 nov. 2025.