@book{GellenbeckRiemenschneiderBernhold2014,
  author    = {Gellenbeck, K. and Riemenschneider, F. and Bernhold, T.},
  title     = {Digitaler Tagungsband 12. M{\"u}nsteraner Facility Management Tag},
  publisher = {INFA-ISFM e. V.},
  address   = {Ahlen},
  pages     = {94 S},
  year      = {2014},
  language  = {mul}
}
@misc{Gellenbeck2014,
  author    = {Gellenbeck, K.},
  title     = {Kommunale Abfallwirtschaft - Logistik (Expertenschulung Chinesische Delegation)},
  year      = {2014},
  language  = {mul}
}
@book{GellenbeckRiemenschneider2015,
  author    = {Gellenbeck, K. and Riemenschneider, F.},
  title     = {Digitaler Tagungsband 13. M{\"u}nsteraner Facility Management Tag},
  publisher = {INFA-ISFM e.V.},
  address   = {Ahlen},
  isbn      = {ISSN (CD) 2195-294},
  pages     = {41 S.},
  year      = {2015},
  language  = {mul}
}
@misc{Gellenbeck2016,
  author    = {Gellenbeck, K.},
  title     = {R{\"u}ckblick - 25 Jahre AWA Entsorgung GmbH (25. Firmenjubil{\"a}um AWA Entsorgung GmbH, Aachen, 17.06.2016)},
  year      = {2016},
  language  = {mul}
}