@article{BERNHOLDRIEMENSCHNEIDERGELLENBECK2006,
  author    = {BERNHOLD, T. and RIEMENSCHNEIDER, F. and GELLENBECK, K.},
  title     = {Facility Management - Aufbruch in eine neue Zeit},
  series = {Mensch, Architektur\& Design},
  journal   = {Mensch, Architektur\& Design},
  pages     = {48 -- 49},
  year      = {2006},
  language  = {mul}
}
@article{GELLENBECK2010,
  author    = {GELLENBECK, K.},
  title     = {F{\"u}r eine starke Innenstadt. Sch{\"o}ner. Sauberer. Sicherer.},
  series = {fhocus - Das Magazin der Fachhochschule M{\"u}nster.},
  journal   = {fhocus - Das Magazin der Fachhochschule M{\"u}nster.},
  number    = {16},
  pages     = {36 -- 37},
  year      = {2010},
  language  = {mul}
}
@article{GELLENBECKDORNBUSCH2010,
  author    = {GELLENBECK, K. and DORNBUSCH, H.-J.},
  title     = {Lenkhilfe},
  series = {aktiva - Das Finanzstylemagazin},
  journal   = {aktiva - Das Finanzstylemagazin},
  year      = {2010},
  language  = {mul}
}