@article{JRAM_1927__156_149605,
     author = {Reinhold Baer},
     title = {Kurventypen auf {Fl\"achen.}},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {231--246},
     publisher = {mathdoc},
     volume = {156},
     year = {1927},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1927__156_149605/}
}