@incollection{ThomasIrrek2004,
  author    = {Thomas, Stefan and Irrek, Wolfgang},
  title     = {The role of energy companies in the implementation of end-use energy efficiency},
  booktitle = {Handbook on energy and environment},
  editor    = {Drenkard, Stefan},
  publisher = {Dt. Energie-Consult-Ingenieurges.},
  address   = {Bad Homburg},
  pages     = {28 -- 44},
  year      = {2004},
  language  = {en}
}