@techreport{BiermayrEhrigWeissetal.,
  author    = {Biermayr, Peter and Ehrig, Rita and Weiss, Werner and Pr{\"u}ggler, Natalie and Fechner, Hubert},
  title     = {Innovative Energietechnologien in {\"O}sterreich - Marktentwicklung 2010},
  subject      = {Energy Technology},
  language  = {de}
}
@techreport{BiermayrEhrigStrasseretal.,
  author    = {Biermayr, Peter and Ehrig, Rita and Strasser, Christoph and W{\"o}rgetter, Manfred and Pr{\"u}ggler, Natalie and Fechner, Hubert and Nurschinger, Markus and Eberl, Manuela},
  title     = {Innovative Energietechnologien in {\"O}sterreich Marktentwicklung 2009 Biomasse, Photovoltaik, Solarthermie und W{\"a}rmepumpen},
  subject      = {Energy Technology},
  language  = {de}
}