@article{MAN_1985__272_164023,
     author = {Heinz-Werner Sch\"ulting},
     title = {Algebraische und topologische reelle {Zykeln} unter birationalen {Transformationen.}},
     journal = {Mathematische Annalen},
     pages = {441--448},
     publisher = {mathdoc},
     volume = {272},
     year = {1985},
     zbl = {0585.14018},
     url = {http://geodesic.mathdoc.fr/item/MAN_1985__272_164023/}
}