@article{AFM_1975_1_1_a7,
     author = {Reiner K\"uhnau},
     title = {Eine {Versch\"arfung} des {Koebeschen} {Viertelsatzes} f\"ur quasikonform firtsetzbare {Abbildungen}},
     journal = {Annales Fennici Mathematici},
     pages = {77--83},
     publisher = {mathdoc},
     volume = {1},
     number = {1},
     year = {1975},
     doi = {10.5186/aasfm.1975.0107},
     language = {de},
     url = {http://geodesic.mathdoc.fr/articles/10.5186/aasfm.1975.0107/}
}