@article{MZ_1933__37_168457,
     author = {L. Lichtenstein},
     title = {Untersuchungen \"uber die {Gestalt} der {Himmelsk\"orper.} {Siebente} {Abhandlung.} {Beitrage} zur {Maxwellschen} {Theorie} der {Saturnringe.} {Anfangswertproblem.}},
     journal = {Mathematische Zeitschrift},
     pages = {424--445},
     publisher = {mathdoc},
     volume = {37},
     year = {1933},
     zbl = {0007.25903},
     url = {http://geodesic.mathdoc.fr/item/MZ_1933__37_168457/}
}