@unpublished{BollinHuber2009,
  author  = {Elmar Bollin and Klaus Huber},
  title   = {K{\"u}hlen mit W{\"a}rme},
  institution = {Fakult{\"a}t Maschinenbau und Verfahrenstechnik (M+V)},
  year    = {2009},
  language  = {de}
}