@article{MM2_1978__26_154588,
     author = {Friedhelm Heinrich Franz},
     title = {\"Uber die {Menge} der kritischen {Werte} gewisser holomorpher {Abbildungen.}},
     journal = {Manuscripta mathematica},
     pages = {247--258},
     publisher = {mathdoc},
     volume = {26},
     year = {1978},
     zbl = {0402.32009},
     url = {http://geodesic.mathdoc.fr/item/MM2_1978__26_154588/}
}