@article{MZ_1930__32_168251,
     author = {A., Wintner},
     title = {Librationstheorie des restringierten {Dreik\"orperproblems}},
     journal = {Mathematische Zeitschrift},
     pages = {641--667},
     publisher = {mathdoc},
     volume = {32},
     year = {1930},
     zbl = {56.0778.03},
     url = {http://geodesic.mathdoc.fr/item/MZ_1930__32_168251/}
}