@article{ELMA_1951__6_140569,
     author = {Adolf Giger},
     title = {Elementare {Bestimmung} der {Bewegung} eines {K\"orpers} im {Gravitationsfeld.}},
     journal = {Elemente der Mathematik},
     pages = {77--81},
     publisher = {mathdoc},
     volume = {6},
     year = {1951},
     zbl = {0043.18205},
     url = {http://geodesic.mathdoc.fr/item/ELMA_1951__6_140569/}
}