@article{MAN_1910__69_158475,
     author = {L. Lichtenstein},
     title = {\"Uber das {Verschwinden} der ersten {Variation} bei z-weidimensionalen {Variationsproblemen}},
     journal = {Mathematische Annalen},
     pages = {514--516},
     publisher = {mathdoc},
     volume = {69},
     year = {1910},
     url = {http://geodesic.mathdoc.fr/item/MAN_1910__69_158475/}
}