1. Mappings and spaces;Arhangel'skiǐ;Russian Math. Surveys,1966
2. The integers and topology;van Douwen,1984
3. Spaces in which sequences suffice;Franklin;Fund. Math.,1965
4. Rings of Continuous Functions;Gillman,1960
5. Variations on tightness;Juhász;Studia Sci. Math. Hungar.,1989