@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/}
}