Existenz kürzester Wege
Compositio Mathematica, Tome 3 (1936) , pp. 441-452.
@article{CM_1936__3__441_0,
     author = {Cohn-Vossen, Stefan},
     title = {Existenz k\"urzester Wege},
     journal = {Compositio Mathematica},
     pages = {441--452},
     publisher = {Johnson Reprint Corporation},
     volume = {3},
     year = {1936},
     zbl = {0015.12304},
     language = {de},
     url = {http://www.numdam.org/item/CM_1936__3__441_0/}
}
Cohn-Vossen, Stefan. Existenz kürzester Wege. Compositio Mathematica, Tome 3 (1936) , pp. 441-452. http://www.numdam.org/item/CM_1936__3__441_0/