1. P. S. Alexandroff and P. Urysohn, Memoire sur les espaces topologiques compacts, Verh. Nederl. Akad. Wetensch. Afd. Natuurk. Sect. I 14 (1929), 1-96.
2. Compact and related mappings;Cain, George L., Jr.;Duke Math. J.,1966
3. Mappings with prescribed singular sets;Cain, George L., Jr.;Nieuw Arch. Wisk. (3),1969
4. Properties of 𝛽𝑋-𝑋 for locally connected generalized continua;Cain, George L., Jr.;Proc. Amer. Math. Soc.,1980
5. Singular sets and remainders;Cain, George L.;Trans. Amer. Math. Soc.,1981