@article{SchuermannKochImperiaetal.1999,
  author    = {H. Sch{\"u}rmann and Norbert Koch and Paolo Imperia and Sigurd Schrader and M. Jandke and P. Strohriegl and Burkhard Schulz and G. Leising and Ludwig Brehmer},
  title     = {Ultraviolet photoelectron spectroscopic study of heterocyclic model compounds for electroluminescent devices},
  year      = {1999},
}