SARAF, Ratnesh K.; CALDAS, Miguel. On ga-compact spaces. Pro Mathematica, [S. l.], v. 14, n. 27-28, p. 91–98, 2000. Disponível em: https://revistas.pucp.edu.pe/index.php/promathematica/article/view/8160. Acesso em: 28 dic. 2025.