1. Mappings and spaces;Arhangel'skii;Russ. Math. Surveys,1966
2. Ordinal invariants for topological spaces;Arhangel'skii;Michigan Math. J.,1968
3. On stratifiable spaces;Borges;Pacific J. Math.,1966
4. A survey of Mi-spaces; open questions and partial results;Borges;Gen. Topology Appl.,1971
5. On subparacompact spaces;Burke;Proc. Amer. Math. Soc.,1969