@article{MAN_1947__120_160147,
     author = {Wilhelm Damk\"ohler},
     title = {\"Uber die {\"Aquivalenz} indefiniter mit definiten isoperimetrischen {Variationsproblemen}},
     journal = {Mathematische Annalen},
     pages = {297--306},
     publisher = {mathdoc},
     volume = {120},
     year = {1947},
     zbl = {0030.39101},
     url = {http://geodesic.mathdoc.fr/item/MAN_1947__120_160147/}
}