@book{WollertFiedler1995,
  author    = {Wollert, J{\"o}rg and Fiedler, J{\"o}rg},
  title     = {Automatisieren mit dem PC : Hardware, Software, Realisierung},
  publisher = {VDI-Verl.},
  address   = {D{\"u}sseldorf},
  isbn      = {3-18-401318-9},
  pages     = {VIII, 293 S.},
  year      = {1995},
  language  = {de}
}
@book{Wollert1995,
  author    = {Wollert, J{\"o}rg},
  title     = {Ein Beitrag zur kognitiven Modellierung regelungstechnischer Systeme unter Ber{\"u}cksichtigung heuristischer und analytischer Merkmale. (Fortschrittberichte VDI : Reihe 8, Meß-, Steuerungs- und Regelungstechnik ; 450)},
  publisher = {VDI-Verl.},
  address   = {D{\"u}sseldorf},
  isbn      = {3-18-345008-9},
  pages     = {VIII, 165 S.},
  year      = {1995},
  language  = {de}
}
@book{PfeifferKnepper1995,
  author    = {Pfeiffer, Johann and Knepper, Ludger},
  title     = {Diplom-Ingenieur/Diplom-Ingenieurin ( Fachhochschule ) Maschinenbau - Allgemeiner Maschinenbau},
  publisher = {Bertelsmann},
  address   = {Bielefeld},
  pages     = {Losebl.-Ausg.},
  year      = {1995},
  language  = {de}
}
@book{KnepperPfeiffer1995,
  author    = {Knepper, Ludger and Pfeiffer, Johann},
  title     = {Diplom-Ingenieur/Diplom-Ingenieurin (Fachhochschule) Maschinenbau - Allgemeiner Maschinenbau},
  publisher = {Bertelsmann},
  address   = {Bielefeld},
  pages     = {Loseblattausg.},
  year      = {1995},
  language  = {de}
}