@article{MAN_1907__63_158286,
     author = {Hans Hahn},
     title = {\"Uber die {Herleitung} der {Differentialgleichungen} der {Variationsrechnung}},
     journal = {Mathematische Annalen},
     pages = {253--272},
     publisher = {mathdoc},
     volume = {63},
     year = {1907},
     language = {de},
     url = {http://geodesic.mathdoc.fr/item/MAN_1907__63_158286/}
}