HINDMAN, Neil; STRAUSS, Dona. Algebra in the Stone–Čech Compactification: An Update. Topology Proceedings, [S. l.], v. 64, p. 1–69, 2024. Disponível em: https://www.topologyproceedings.org/index.php/tp/article/view/121. Acesso em: 30 jun. 2026.