1. Epimorphisms and dominions, II;Howie;J. Algebra,1967
2. Epimorphisms and dominions;Isbell,1966
3. Epimorphisms and dominions, III;Isbell;Amer. J. Math.,1968
4. Epimorphisms and dominions, IV;Isbell;J. London Math. Soc.,1969
5. TX is absolutely closed;Scheiblich;Notices Amer. Math. Soc.,1973