1. On submaximal spaces
2. B. Blackadar , Projections in C* -algebras vol. 167, Contemporary Mathematics, Providence, 1994.
3. J. B. Conway , A Course in Functional Analysis vol. 96, Springer, New York, 1990.
4. J. F. Berglund , H. D. Junghenn and P. Milnes , Analysis on Semigroups: Function Spaces, Compactifications, Representations, John Wiley & Sons, Inc, New York, 1989.
5. Partial discretization of topologies;Bonanzinga;Boll. Unione Mat. Ital. Sez. B Artic. Ric. Mat. (8),2000