@article{MZ_1969__109_171149,
     author = {Max Koecher},
     title = {Gruppen und {Lie-Algebren} von rationalen {Funktionen.}},
     journal = {Mathematische Zeitschrift},
     pages = {349--392},
     publisher = {mathdoc},
     volume = {109},
     year = {1969},
     zbl = {0181.04503},
     url = {http://geodesic.mathdoc.fr/item/MZ_1969__109_171149/}
}