@incollection{Dreger/etal:98,
  author={M. Dreger and N. Fuhr and K. Gro\ss{}johann and S. Lohrum},
  title={Provider Selection -- Design and Implementation of the Medoc Broker},
  booktitle={Digital Libraries in Computer Science},
  publisher={Springer-Verlag},
  pages={67--78},
  address={Heidelberg},
  entrydate=19980428,
  year=1998
}