@article{ZAA_1999__18_4_48512,
     author = {Begehr, H. and Dai, D.Q.},
     title = {Spatial {Riemann} problem for analytic functions of two complex variables.},
     journal = {Zeitschrift f\"ur Analysis und ihre Anwendungen},
     pages = {827--837},
     publisher = {mathdoc},
     volume = {18},
     number = {4},
     year = {1999},
     zbl = {0944.30025},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ZAA_1999__18_4_48512/}
}