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@article{MZ_1961__77_169990, author = {Hans-Joachim Kowalsky}, title = {Kategorien topologischer {R\"aume.}}, journal = {Mathematische Zeitschrift}, pages = {249--272}, publisher = {mathdoc}, volume = {77}, year = {1961}, zbl = {0099.17202}, url = {http://geodesic.mathdoc.fr/item/MZ_1961__77_169990/} }
Hans-Joachim Kowalsky. Kategorien topologischer Räume.. Mathematische Zeitschrift, Tome 77 (1961), pp. 249-272. http://geodesic.mathdoc.fr/item/MZ_1961__77_169990/