@article{ELMA_1955__10_140622,
     author = {L. Locher-Ernst},
     title = {Die zw\"olf {Nabelpunkte} des {Ellipsoides}},
     journal = {Elemente der Mathematik},
     pages = {49--57},
     year = {1955},
     volume = {10},
     zbl = {0064.14801},
     url = {http://geodesic.mathdoc.fr/item/ELMA_1955__10_140622/}
}