@book{Essl,
  author    = {Essl, G{\"u}nter},
  title     = {Worauf Berater achten. Handbuch f{\"u}r Unternehmensberatung},
  publisher = {Linde},
  publisher      = {Fachhochschule Technikum Wien},
  subject      = {Consulting},
  language  = {de}
}
@article{LehnerFredersdorf,
  author    = {Lehner, Martin and Fredersdorf, Frederic},
  title     = {Koste es, was es solle!},
  series = {management \& training},
  journal   = {management \& training},
  number    = {1},
  pages     = {40 -- 41},
  subject      = {Management},
  language  = {de}
}
@article{Wala,
  author    = {Wala, Thomas},
  title     = {Die betriebswirtschaftliche Klausur: Unternehmensf{\"u}hrung},
  series = {WISU},
  volume    = {2019},
  journal   = {WISU},
  pages     = {933 ff -- 8},
  subject      = {Management},
  language  = {de}
}
@article{Wala,
  author    = {Wala, Thomas},
  title     = {Organisationsmodell Holokratie: So funktioniert Unternehmensf{\"u}hrung ohne Hierarchien},
  series = {Cooperativ},
  journal   = {Cooperativ},
  number    = {4},
  pages     = {16 ff},
  subject      = {Management},
  language  = {de}
}
@article{Lackner,
  author    = {Lackner, Maximilian},
  title     = {Industrial Engineering Management - THE key skill for the Digital Age},
  series = {The International Journal of Engineering and Science (THE IJES)},
  journal   = {The International Journal of Engineering and Science (THE IJES)},
  subject      = {Management},
  language  = {en}
}