@article{JRAM_1934__171_149886,
     author = {H. Boerner},
     title = {Ein },
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {120--127},
     publisher = {mathdoc},
     volume = {171},
     year = {1934},
     zbl = {0009.17002},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1934__171_149886/}
}