DE CARVALHO JUNIOR, A. A remark on the fundamental group of a compact negatively curved manifold. Latin American Journal of Mathematics, [S. l.], v. 2, n. 01, p. 51–57, 2023. Disponível em: https://www.lajm.ufscar.br/index.php/capa/article/view/24. Acesso em: 23 jul. 2024.