@article{Hirschberg2008,
  author    = {Hirschberg, Rainer},
  title     = {Decentral pumps in heating systems - a new hydraulic approac},
  series = {1st International Rotating Equipment Conference - Pumps and Compressors, 9th Pump Users International Forum, 9. Internationales Pumpenanwenderforum, Final Report, D{\"u}sseldorf, DE, 28.-29. Oct, 2008},
  journal   = {1st International Rotating Equipment Conference - Pumps and Compressors, 9th Pump Users International Forum, 9. Internationales Pumpenanwenderforum, Final Report, D{\"u}sseldorf, DE, 28.-29. Oct, 2008},
  publisher = {-},
  pages     = {1 -- 10},
  year      = {2008},
  language  = {en}
}
@book{Hirschberg2008,
  author    = {Hirschberg, Rainer},
  title     = {Energieeffiziente Geb{\"a}ude : bau- und anlagentechnische L{\"o}sungen ; vereinfachte Verfahren zur energetischen Bewertung ; mit 47 Tabellen ; [Praxishandbuch zur EnEV 2007] / Rainer Hirschberg},
  publisher = {M{\"u}ller},
  address   = {K{\"o}ln},
  isbn      = {978-3-481-02227-3},
  pages     = {308 S. : zahlr. graph. Darst.},
  year      = {2008},
  language  = {de}
}