@article{MZ_1991__207_2_174258,
     author = {W. Klingenberg and S. Pinchuk},
     title = {Normal families of proper holomorphic correspondences.},
     journal = {Mathematische Zeitschrift},
     pages = {91--96},
     publisher = {mathdoc},
     volume = {207},
     number = {2},
     year = {1991},
     zbl = {0735.32019},
     url = {http://geodesic.mathdoc.fr/item/MZ_1991__207_2_174258/}
}