@article{MAN_1908__65_158348,
     author = {G. Landsberg},
     title = {\"Uber die {Kr\"ummung} in der {Variationsrechnung.} {(Mit} 6 {Figuren} im {Text)}},
     journal = {Mathematische Annalen},
     pages = {313--349},
     publisher = {mathdoc},
     volume = {65},
     year = {1908},
     url = {http://geodesic.mathdoc.fr/item/MAN_1908__65_158348/}
}