1. \cal𝑍-realcompactifications and normal bases;Alò, R. A.;J. Austral. Math. Soc.,1969
2. On Wallman’s method of compactification;Banaschewski, Bernhard;Math. Nachr.,1963
3. Sur la compactification d’un espace topologique;Boboc, N.;Bull. Math. Soc. Sci. Math. Phys. R. P. Roumaine (N.S.),1961
4. Compactifications and semi-normal spaces;Frink, Orrin;Amer. J. Math.,1964
5. The University Series in Higher Mathematics;Gillman, Leonard,1960