@article{JRAM_1847__35_147378,
     author = {E.E. Kummer},
     title = {Ueber {Systeme} von {Curven,} welche einander \"uberall rechtwinklig durchschneiden.},
     journal = {Journal f\"ur die reine und angewandte Mathematik},
     pages = {5--12},
     publisher = {mathdoc},
     volume = {35},
     year = {1847},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/JRAM_1847__35_147378/}
}