@article{CMH_1935__8_138649,
     author = {Karol Borsuk},
     title = {\"Uber das {Ph\"anomen} der {Unzerlegbarkeit} in der {Polyedertopologie.}},
     journal = {Commentarii mathematici Helvetici},
     pages = {142--148},
     year = {1935},
     volume = {8},
     zbl = {0013.13102},
     url = {http://geodesic.mathdoc.fr/item/CMH_1935__8_138649/}
}