1. The star method, new classes of spaces and countable compactness;Arhangel'skii;Soviet Math. Dokl.,1980
2. Covering properties;Burke,1984
3. General Topology;Engelking,1989
4. Rings of Continuous Functions;Gillman,1960
5. Rings of real continuous functions;Hewitt;Trans. Amer. Math. Soc.,1948