@misc{Wetter2006,
  author    = {Wetter, Christof},
  title     = {Presentation of the Guidelines for Constructing Biogas Plants- Recommended Procedures and Instructions,Vortrag auf der IFAT 2006 (Internationale Umweltmesse),Fachhochschule M{\"u}nster},
  address   = {Shanghai},
  year      = {2006},
  language  = {en}
}