@article{Luhmann1991,
  author    = {Luhmann, Hans-Jochen},
  title     = {Betreibermodelle f{\"u}r KWK-Anlagen},
  journal   = {Energieanwendung},
  volume    = {40},
  number    = {10/11},
  pages     = {332 -- 334},
  year      = {1991},
  language  = {de}
}