1. Separation of bicompact sets;Aull;Math. Ann.,1965
2. Note on epi in TO;baron;Canad. Math. Bull.,1968
3. The meaning of mono and epi in some familiar categories;Burgess;Canad. Math. Bull.,1965
4. Topology;Dugundji,1966
5. On E-compact spaces;Engelking;Bull. Acad. Polon. Sci. Sér. Sci. Math. Astronom. Phys.,1958