@book{BERNHOLD2014,
  author    = {BERNHOLD, T.},
  title     = {Produktivit{\"a}tsmessung von Immobilien-Services: Schlussbericht f{\"u}r das BMBF-Projekt ProMIse},
  address   = {M{\"u}nster},
  year      = {2014},
  language  = {de}
}