@book{OPUS4-2098,
  title     = {Smart Energy 2018},
  editor    = {Großmann, Uwe and Kunold, Ingo and Engels, Christoph},
  publisher = {Verlag Werner H{\"u}lsbusch},
  address   = {Gl{\"u}ckstadt},
  isbn      = {978-3-86488-144-2},
  pages     = {256},
  year      = {2018},
  language  = {de}
}
@book{OPUS4-2099,
  title     = {Smart Energy 2017},
  editor    = {Großmann, Uwe and Kunold, Ingo and Engels, Christoph},
  publisher = {Verlag Werner H{\"u}lsbusch},
  address   = {Gl{\"u}ckstadt},
  isbn      = {978-3-86488-125-1},
  pages     = {158},
  year      = {2017},
  language  = {de}
}
@book{OPUS4-2100,
  title     = {Smart Energy 2016},
  editor    = {Großmann, Uwe and Kunold, Ingo and Engels, Christoph},
  publisher = {Verlag Werner H{\"u}lsbusch},
  address   = {Gl{\"u}ckstadt},
  isbn      = {978-3-86488-112-1},
  pages     = {120},
  year      = {2016},
  language  = {de}
}
@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}
}