1. Abstract and Concrete Categories;Adámek,1990
2. Mappings and spaces;Arhangel'skii;Russian Math. Surveys,1966
3. Sur les notions de filtre et de grille;Choquet;C. R. Math. Acad. Sci. Paris,1947
4. Convergence-theoretic characterizations of compactness;Dolecki;Topology Appl.,2002
5. Irregularity;Dolecki;Topology Appl.,2007