@article{KANNINGVOGLERBERNHOLDetal.2008,
  author    = {KANNING, U. P. and VOGLER, S. and BERNHOLD, T. and GELLENBECK, K.},
  title     = {Determinants of the implementation of facility management in German communes},
  series = {Facilities},
  volume    = {26},
  journal   = {Facilities},
  number    = {09/10},
  pages     = {418 -- 425},
  year      = {2008},
  language  = {en}
}
@article{BERNHOLDBOeLTERBUeTTNERetal.2008,
  author    = {BERNHOLD, T. and B{\"O}LTER, G. and B{\"U}TTNER, B. and HERMANN, T. and MAY, M. and RIEMENSCHNEIDER, F.},
  title     = {Wissenschaftliches Modell zur FM-Einf{\"u}hrung},
  series = {Facility Manager; Ausgabe Juli/August},
  journal   = {Facility Manager; Ausgabe Juli/August},
  pages     = {21},
  year      = {2008},
  language  = {mul}
}