@article{MAN_1911__70_158489,
     author = {H. Hahn},
     title = {\"Uber r\"aumliche {Variationsprobleme}},
     journal = {Mathematische Annalen},
     pages = {110--142},
     publisher = {mathdoc},
     volume = {70},
     year = {1911},
     url = {http://geodesic.mathdoc.fr/item/MAN_1911__70_158489/}
}