@article{JRAM_1871__73_148165,
     author = {R. Baltzer},
     title = {Ueber die {Hypothese} der {Parallelentheorie.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {372--373},
     publisher = {mathdoc},
     volume = {73},
     year = {1871},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1871__73_148165/}
}