1. Reflectors as compositions of epireflectors;Baron;Trans. Amer. Math. Soc.,1969
2. Some aspects of groups with unique roots;Baumslag;Acta Math.,1960
3. Topologische Reflexionen und Coreflexionen;Herrlich,1968
4. Limit operators and topological coreflections;Herrlich;Trans. Amer. Math. Soc.,1969
5. Category Theory;Herrlich,1979