@book{HardtMuellerBergetal.1980,
  author    = {Hardt, Arno and M{\"u}ller, Gerhard and Berg, G. P. and Kelleter, H.-J.},
  title     = {Aufbau eines Plastikszintillationsz{\"a}hlers f{\"u}r den Magnetspektrographen "BIG KARL" am J{\"u}licher Zyklotron "JULIC". M{\"u}ller, Gerhard; Berg , G. P.; Hardt, A.; Kelleter, H.-J.; Martin, S.-A.; Meissburger, J.},
  publisher = {Kernforschungsanlage J{\"u}lich},
  address   = {J{\"u}lich},
  pages     = {37 S.},
  year      = {1980},
  language  = {de}
}
@book{ReichelMuellerMandelartz2009,
  author    = {Reichel, Jens and M{\"u}ller, Gerhard and Mandelartz, Johannes},
  title     = {Betriebliche Instandhaltung},
  publisher = {Springer},
  address   = {Berlin [u.a.]},
  isbn      = {978-3-642-00502-2},
  pages     = {XXI, 354 S. Ill., graph. Darst.},
  year      = {2009},
  subject      = {Unternehmen},
  language  = {de}
}