1. On a characterization of collectionwise normality;Alas;Canad. Math. Bull.,1971
2. Memoire sur les espaces topologiques compacts.;Alexandroff;Verh. Akad. Wetensch. Amsterdam,1929
3. Remark on the concept of compactness;Arens;Portugal Math.,1950
4. New criteria for paracompactness and metrizability of an arbitrary T1 space;Arhangel'skii;Dokl. Akad. Nauk SSSR,1961
5. Mappings and spaces;Arhangel'skii;Russian Math. Surveys,1966