@article{GrossTimmer1998,
  author    = {Groß, Rolf Fritz and Timmer, H.},
  title     = {Energetische und betriebswirtschaftliche Bewertung von K{\"u}hlsystemen f{\"u}r K{\"u}hllager},
  series = {HLH. Heizung, L{\"u}ftung/Klima, Haustechnik},
  volume    = {49},
  journal   = {HLH. Heizung, L{\"u}ftung/Klima, Haustechnik},
  number    = {9},
  publisher = {Springer},
  address   = {D{\"u}sseldorf},
  issn      = {1436-5103},
  pages     = {74 -- 77},
  year      = {1998},
  language  = {de}
}
@article{Meliss1998,
  author    = {Meliß, Michael},
  title     = {Regenerative Energiequellen},
  series = {Brennstoff, W{\"a}rme, Kraft : BWK ; das Energie-Fachmagazin. Bd. 50 (1998), H. 4},
  journal   = {Brennstoff, W{\"a}rme, Kraft : BWK ; das Energie-Fachmagazin. Bd. 50 (1998), H. 4},
  issn      = {0006-9612 (Print) ; 1436-4883 (E-Journal)},
  pages     = {74 -- 81},
  year      = {1998},
  language  = {de}
}