On compact spaces which are unions of certain collections of subspaces of special type Aleksander V. Arhangel'skii (1976) Commentationes Mathematicae Universitatis Carolinae
On continuous images of almost Tychonoff cubes Aleksander V. Arhangel'skii, Juraj Činčura (1984) Commentationes Mathematicae Universitatis Carolinae
On subsets of Alexandroff duplicates Takemi Mizokami (2005) Commentationes Mathematicae Universitatis Carolinae We characterize the subsets of the Alexandroff duplicate which have a G δ -diagonal and the subsets which are M-spaces in the sense of Morita.
On the External Characterization of Topological Functors. Harvey Wolff (1977) Manuscripta mathematica
On The Sup And Inf Invariance Of Some Separation Axioms Peter Krenger, Jürg Rätz (1977) Publications de l'Institut Mathématique
On the sup and inf invariance of some seperation axioms. J. Rätz, P. Krenger (1977) Publications de l'Institut Mathématique [Elektronische Ressource]