Acknowledgement
Supported by : Wonkwang University
References
- Compactness, Contemporary Problems in Mathematics. Fundamental Directions. General Topology - 2 Arhangel'skii, A.V.
- Encyclopedia of Mathematical Sciences. General Topology II Arhangel'skii, A.V.
- Proc. Amer. Math. Soc. v.81 Spaces with dense conditionally compact subsets Berner, A.J.
- General Topology Engelking, R.
- Pacific J. Math. v.57 no.2 Some applications of ultrafilters in topology Ginsburg, J.;Saks, A.
- A survey on star covering properties;Topology Atlas, Preprint No. 330 Matveev, M.
- Czsech. Math. J. v.19 Countably compact and pseudocompact products Noble, N.
- Countably compact and sequentially compact spaces, Handbook of Set-theoretic Topology Vaughan, J.E.;Kunen, K.(ed.);Vaughan, J.E.(ed.)