1. Rings of continuous functions;Gillman,1960
2. On the concept of reflections in general topology;Herrlich,1969
3. The Wallman compactification is an epi-reflection;Harris;Proc. Amer. Math. Soc.,1971
4. General topology;Keiley,1955
5. Extension of functions from dense subspaces;McDowell;Duke Math. J.,1958