Salas Brown, M., Rosas, E. y Carpintero, C. (2009) Generalized closed sets via ideals and operator, Pro Mathematica, 23(45-46), pp. 127-146. Disponible en: https://revistas.pucp.edu.pe/index.php/promathematica/article/view/10268 (Accedido: 26abril2024).