@article{MZ_1920__6_167562,
     author = {B., Grammel},
     title = {Die {Stabilit\"at} der {Staudeschen} {Kreiselbewegungen}},
     journal = {Mathematische Zeitschrift},
     pages = {124--142},
     publisher = {mathdoc},
     volume = {6},
     year = {1920},
     zbl = {47.0728.02},
     url = {http://geodesic.mathdoc.fr/item/MZ_1920__6_167562/}
}