@article{JDM_1907__16_145063,
     author = {R.v. Lilienthal},
     title = {\"Uber ebene {Kurvennetze} ohne {Umwege.}},
     journal = {Jahresbericht der Deutschen Mathematiker-Vereinigung},
     pages = {204--218},
     publisher = {mathdoc},
     volume = {16},
     year = {1907},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/JDM_1907__16_145063/}
}