@article{MZ_1967__100_170820,
     author = {Frank B. Ryan and Karl F. Barth},
     title = {Asymptotic {Values} of {Functions} {Holomorphic} in the {Unit} {Disk.}},
     journal = {Mathematische Zeitschrift},
     pages = {414--415},
     publisher = {mathdoc},
     volume = {100},
     year = {1967},
     zbl = {0154.32202},
     url = {http://geodesic.mathdoc.fr/item/MZ_1967__100_170820/}
}