@misc{BERNHOLDLELLEKKUeRSCHNERetal.2013,
  author    = {BERNHOLD, T. and LELLEK, V. and K{\"U}RSCHNER, M. and AVERBECK, A.-K.},
  title     = {Productivity Measurement of Facility Services - A web-based CAFM Application; XXIII International RESER Conference; September 19th-21st 2013, Aix en Provence},
  year      = {2013},
  language  = {en}
}
@misc{BERNHOLDLELLEKKUeRSCHNERetal.2013,
  author    = {BERNHOLD, T. and LELLEK, V. and K{\"U}RSCHNER, M. and AVERBECK, A.-K.},
  title     = {Productivity Measurement of Facility Services - A web-based CAFM Application; XXIII International RESER Conference; September 19th-21st 2013, Aix en Provence},
  year      = {2013},
  language  = {en}
}
@incollection{LELLEKKUeRSCHNER2014,
  author    = {LELLEK, V. and K{\"U}RSCHNER, M.},
  title     = {Produktivit{\"a}tsmessung von Immobilien-Services unter Einsatz einer CAFM Web-Applikation},
  series = {Facility Management Messe 2014 Tagungsband.},
  booktitle = {Facility Management Messe 2014 Tagungsband.},
  publisher = {VEW Verlag 2014},
  address   = {Berlin, Offenbach},
  pages     = {214 -- 224},
  year      = {2014},
  language  = {de}
}