@article{MOMA_1970__74_177502,
     author = {Harald Wimmer},
     title = {\"Uber {Typen} des orbitalen {Stabilit\"atsverhaltens.}},
     journal = {Monatshefte f\"ur Mathematik},
     pages = {172--178},
     year = {1970},
     volume = {74},
     zbl = {0213.10604},
     url = {http://geodesic.mathdoc.fr/item/MOMA_1970__74_177502/}
}