@incollection{KnocheKruskaWeberetal.2001,
  author    = {Knoche, K. F. and Kruska, Martin and Weber, P. and Kuperjans, Isabel},
  title     = {Energiemanagement},
  series = {Lexikon Nachhaltiges Wirtschaften. - (Lehr- und Handb{\"u}cher zur {\"o}kologischen Unternehmensf{\"u}hrung und Umwelt{\"o}konomie)},
  booktitle = {Lexikon Nachhaltiges Wirtschaften. - (Lehr- und Handb{\"u}cher zur {\"o}kologischen Unternehmensf{\"u}hrung und Umwelt{\"o}konomie)},
  editor    = {Schulz, Werner F.},
  publisher = {Oldenbourg},
  address   = {M{\"u}nchen [u.a.]},
  isbn      = {3-486-24523-6},
  pages     = {88 -- 92},
  year      = {2001},
  language  = {de}
}
@inproceedings{RingbeckSchwarteBuxbaumetal.2001,
  author    = {Ringbeck, Thorsten and Schwarte, Rudolf and Buxbaum, Bernd and Hess, Rudolf},
  title     = {Optical GMSK modem for infrared wireless communication based on a new receiver principle in CMOS technology},
  series = {Optoelectronic interconnects VIII : 25 - 26 January 2001, San Jose, USA. - (Proceedings of SPIE ; 4292)},
  booktitle = {Optoelectronic interconnects VIII : 25 - 26 January 2001, San Jose, USA. - (Proceedings of SPIE ; 4292)},
  editor    = {Tang, Suning},
  publisher = {SPIE},
  address   = {Bellingham, Wash.},
  isbn      = {0-8194-3970-3},
  issn      = {0038-7355},
  pages     = {25 -- 34},
  year      = {2001},
  language  = {en}
}