@incollection{GrotehusmannKhelilSiekeretal.1993,
  author    = {D. Grotehusmann and A. Khelil and F. Sieker and M. Uhl},
  title     = {Alternative urban drainage concept and design},
  booktitle = {Proceedings of the 6th International Conference on Urban Storm Drainage, Niagara Falls, Canada},
  year      = {1993},
}