Belugin, V. I. Modifizierungen topologischer Räume. (Russian) Zbl 0323.54002 Mat. Zap., Sverdl. 8, No. 2, 3-16 (1972). MSC: 54A10 54D10 54C20 54D25 PDFBibTeX XMLCite \textit{V. I. Belugin}, Mat. Zap., Sverdl. 8, No. 2, 3--16 (1972; Zbl 0323.54002)
Nagata, Jun-iti Some theorems on generalized metric spaces. (English) Zbl 0277.54032 Theory Sets Topology, Collection Papers Honour Felix Hausdorff, 377-390 (1972). MSC: 54E99 54C10 54D99 54C60 PDFBibTeX XML
Coban, M. M. Many-valued mappings and Borel sets. II. (English) Zbl 0255.54010 Trans. Mosc. Math. Soc. 23(1970), 286-310 (1972). MSC: 54C60 54C05 54C10 54H05 PDFBibTeX XMLCite \textit{M. M. Coban}, Trans. Mosc. Math. Soc. 23, 286--310 (1972; Zbl 0255.54010)
En-Nashef, Bassam On coincidence producing multi-functions onto trees. (English) Zbl 0244.54031 Bull. Acad. Pol. Sci., Sér. Sci. Math. Astron. Phys. 20, 1007-1013 (1972). MSC: 54H25 54F05 54C10 54C60 PDFBibTeX XMLCite \textit{B. En-Nashef}, Bull. Acad. Pol. Sci., Sér. Sci. Math. Astron. Phys. 20, 1007--1013 (1972; Zbl 0244.54031)
Timohovic, V. L. The structure of topologies on a set. (English) Zbl 0242.54004 Mosc. Univ. Math. Bull. 24(1969), No. 5-6, 1-4 (1972). MSC: 54A10 54D25 PDFBibTeX XMLCite \textit{V. L. Timohovic}, Mosc. Univ. Math. Bull. 24, No. 5--6, 1--4 (1972; Zbl 0242.54004)