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2. On factorization of maps through τX;Blaszczyk;Colloq. Math.,1971
3. Regular closed maps;Dickman;Proc. Amer. Math. Soc.,1973
4. A generalization of realcompact spaces;Frolik;Czech. Math. J.,1963
5. Absolutely closed maps;Friedler;Proc. Amer. Math. Soc.,1975