@article{CM_1935__2__163_0,
     author = {Freudenthal, Hans},
     title = {\"Uber die topologische {Invarianz} kombinatorischer {Eigenschaften} des {Au{\ss}enraumes} abgeschlossener {Mengen}},
     journal = {Compositio Mathematica},
     pages = {163--176},
     publisher = {Johnson Reprint Corporation},
     volume = {2},
     year = {1935},
     zbl = {0011.27302},
     language = {de},
     url = {http://www.numdam.org/item/CM_1935__2__163_0/}
}