@incollection{GrueningHoppe2007,
  author    = {H. Gr{\"u}ning and H. Hoppe},
  title     = {Innovative alternatives for the treatment of storm water in separate system catchments},
  booktitle = {NOVATECH 2007, 6th International Conference on Innovative Technologies in Urban Drainage, Lyon-Villeurebanne, France, 25.-28.June 2007},
  year      = {2007},
}