@article{MZ_1976__149_172377,
     author = {G\"unter Frank},
     title = {Eine {Vermutung} von {Hayman} \"uber {Nullstellen} meromorpher {Funktionen.}},
     journal = {Mathematische Zeitschrift},
     pages = {29--36},
     year = {1976},
     volume = {149},
     zbl = {0312.30032},
     url = {http://geodesic.mathdoc.fr/item/MZ_1976__149_172377/}
}