LI, Kewei. Using Geometric Group Theory to Find Free Generators of Subgroups of Free Groups. Mathematical Modeling and Algorithm Application, [S. l.], v. 6, n. 1, p. 1–6, 2025. DOI: 10.54097/nfaxz289. Disponível em: https://drpress.org/ojs/index.php/mmaa/article/view/31806. Acesso em: 26 jul. 2026.