@article{MAN_1903__57_158098,
     author = {Georg Hamel},
     title = {\"Uber die {Geometrieen,} in denen die {Geraden} die {K\"urzesten} sind. {(Mit} 5 {Figuren} im {Text).}},
     journal = {Mathematische Annalen},
     pages = {231--264},
     publisher = {mathdoc},
     volume = {57},
     year = {1903},
     zbl = {34.0527.01},
     url = {http://geodesic.mathdoc.fr/item/MAN_1903__57_158098/}
}