1. Weak developments and metrization;Alleche;Topology Appl.,2000
2. On the coincidence of the upper Kuratowski topology with the cocompact topology;Alleche;Topology Appl.,1999
3. The frequency spectrum of a topological space and the classification of spaces;Arhangel'skii;Soviet Math. Doklady,1972
4. The frequency spectrum of a topological space and the product operation;Arhangel'skii;Trans. Moscow Math. Soc.,1981
5. Sur la topologie de Fell et la topologie de la convergence;Arab;C. R. Acad. Sci. Paris I Math.,1994