@article{MZ_1930__32_168253,
     author = {A., Wintner},
     title = {Zur effektiven {Stabilit\"at} des {Mondes}},
     journal = {Mathematische Zeitschrift},
     pages = {679--698},
     publisher = {mathdoc},
     volume = {32},
     year = {1930},
     zbl = {56.0779.01},
     url = {http://geodesic.mathdoc.fr/item/MZ_1930__32_168253/}
}