@article{AFM_1971_471-500_a13,
     author = {J. Krzyz and E. Zlotkiewicz},
     title = {Koebe sets for univalent functions with two preassigned values},
     journal = {Annales Fennici Mathematici},
     publisher = {mathdoc},
     volume = {471-500},
     year = {1971},
     doi = {10.5186/aasfm.1971.487},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.5186/aasfm.1971.487/}
}