@inproceedings{
  author = {L. Br\"{o}tje},
  year = {2000},
  month = {Dec},
  title = {Concatenation of Turbo-Codes and Walsh-Codes in Direct-Sequence CDMA-Systems},
  address={Schloss Reisensburg, Germany},
  booktitle={Winter School on Coding and Information Theory, University of Ulm}
}