Twierdzenie Katětova-Tonga (Polish Wikipedia)

Analysis of information sources in references of the Wikipedia article "Twierdzenie Katětova-Tonga" in Polish language version.

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doi.org

dx.doi.org

HingH. Tong HingH., Some characterizations of normal and perfectly normal spaces, „Duke Mathematical Journal”, 19 (2), 1952, s. 289–292, DOI: 10.1215/S0012-7094-52-01928-5, ISSN 0012-7094 .

icm.edu.pl

matwbn.icm.edu.pl

M. Katětov, On real-valued functions in topological spaces. Fundamenta Mathematicae 38 (1951), s. 85–91.

worldcat.org

HingH. Tong HingH., Some characterizations of normal and perfectly normal spaces, „Duke Mathematical Journal”, 19 (2), 1952, s. 289–292, DOI: 10.1215/S0012-7094-52-01928-5, ISSN 0012-7094 .