CARPINTERO, Carlos, and Ennis ROSA. “On Important Aspects of Open Sets Widespread With Respect to an Ideal”. Revista MATUA ISSN: 2389-7422 2, no. 1 (July 30, 2015). Accessed May 19, 2024. https://investigaciones.uniatlantico.edu.co/revistas/index.php/MATUA/article/view/1348.