@misc{GrueningHoppe2006,
  author    = {H. Gr{\"u}ning and H. Hoppe},
  title     = {New requirements for treatment of stormwater and methods of sewage system management},
  institution = {Energie · Geb{\"a}ude · Umwelt (EGU)},
  type      = {lecture},
  pages     = {375 -- 381},
  year        = {2006},
}