@book{OPUS4-2101,
  title     = {Smart Energy 2015},
  editor    = {Großmann, Uwe and Kunold, Ingo and Engels, Christoph},
  publisher = {Verlag Werner H{\"u}lsbusch},
  address   = {Gl{\"u}ckstadt},
  isbn      = {978-3-86488-093-3},
  pages     = {134},
  year      = {2015},
  language  = {de}
}
@book{RootSchmidtmann2015,
  author    = {Root, Pascal and Schmidtmann, Achim},
  title     = {IT-Servicemanagement in KMU},
  publisher = {Books on Demand},
  address   = {Norderstedt},
  isbn      = {978-3-7386-3764-9},
  pages     = {184},
  year      = {2015},
  language  = {de}
}