@book{Pfeiffer1994,
  author    = {Pfeiffer, Johann},
  title     = {Rechnergest{\"u}tzte Auslegung von Seiltrieben - Praxisimplementierung},
  publisher = {Fachhochsch.},
  address   = {Aachen},
  year      = {1994},
  language  = {de}
}
@book{Pfeiffer1993,
  author    = {Pfeiffer, Johann},
  title     = {Rechnergest{\"u}tzte Auslegung von Seiltrieben},
  publisher = {Fachhochsch.},
  address   = {Aachen},
  year      = {1993},
  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{PfeifferKnepper1998,
  author    = {Pfeiffer, Johann and Knepper, Ludger},
  title     = {Diplom Ingenieur/Diplom Ingenieurin (Fachhochschule) Maschinenbau Konstruktionstechnik},
  publisher = {Bertelsmann},
  address   = {Bielefeld},
  pages     = {Losebl.-Ausg.},
  year      = {1998},
  language  = {de}
}
@book{PfeifferKnepper1999,
  author    = {Pfeiffer, Johann and Knepper, Ludger},
  title     = {Diplom-Ingenieur/Diplom-Ingenieurin (Fachhochschule) Maschinenbau Energie- und W{\"a}rmetechnik},
  publisher = {Bertelsmann},
  address   = {Bielefeld},
  pages     = {Losebl.-Ausg.},
  year      = {1999},
  language  = {de}
}
@book{PfeifferGauchel2004,
  author    = {Pfeiffer, Johann and Gauchel, Joachim},
  title     = {Kalibrierung Koordinatenmessger{\"a}t},
  publisher = {Fachhochsch.},
  address   = {Aachen},
  year      = {2004},
  language  = {de}
}
@book{Pfeiffer2004,
  author    = {Pfeiffer, Johann},
  title     = {Ein Beitrag zur systematischen Beschreibung der Parameter und deren Einfluss auf die Maßgenauigkeit und Oberfl{\"a}chenqualit{\"a}t bei der Erzeugung und Herstellung von Freiformgeometrien : das System CAD/CAM/CAQ - Generieren, Herstellen, Messen},
  publisher = {Fachhochsch.},
  address   = {Aachen},
  year      = {2004},
  language  = {de}
}
@book{Pfeiffer2003,
  author    = {Pfeiffer, Johann},
  title     = {3D-Freiformfl{\"a}chenmessung},
  publisher = {Fachhochsch.},
  address   = {Aachen},
  year      = {2003},
  language  = {de}
}
@book{Pfeiffer2000,
  author    = {Pfeiffer, Johann},
  title     = {Genauigkeit und Qualit{\"a}t von Freiformfl{\"a}chen},
  publisher = {Fachhochsch.},
  address   = {Aachen},
  year      = {2000},
  language  = {de}
}
@book{Pfeiffer1999,
  author    = {Pfeiffer, Johann},
  title     = {Verbesserung der Qualit{\"a}t von Freiformoberfl{\"a}chen},
  publisher = {Fachhochsch.},
  address   = {Aachen},
  year      = {1999},
  language  = {de}
}
@book{Pfeiffer1997,
  author    = {Pfeiffer, Johann},
  title     = {HSP III Koordinatenmessger{\"a}t},
  publisher = {Fachhochsch.},
  address   = {Aachen},
  year      = {1997},
  language  = {de}
}
@book{Pfeiffer1997,
  author    = {Pfeiffer, Johann},
  title     = {Design und Herstellen von Werkzeugen mit Freiformfl{\"a}chen},
  publisher = {Fachhochsch.},
  address   = {Aachen},
  year      = {1997},
  language  = {de}
}
@book{Raatschen1986,
  author    = {Raatschen, Hans-J{\"u}rgen},
  title     = {Ein Bicharakteristikenverfahren zur Berechnung von Spannungswellen in krummlinig berandeten Scheiben},
  publisher = {RWTH Aachen},
  address   = {Aachen},
  pages     = {110 S. : Ill., graph. Darst.},
  year      = {1986},
  language  = {de}
}
@book{Gartzen2013,
  author    = {Gartzen, Johannes},
  title     = {Innovation durch Kooperation : wie der Mittelstand durch Zusammenarbeit mit den Hochschulen seine Wettbewerbsf{\"a}higkeit steigert : Festschrift f{\"u}r Prof. Dr. rer. nat. Johannes Gartzen},
  publisher = {Apprimus Verl.},
  address   = {Aachen},
  isbn      = {978-3-86359-136-6},
  pages     = {III, 188 S. : Ill.},
  year      = {2013},
  language  = {de}
}
@book{Anik1983,
  author    = {Anik, Sabri},
  title     = {Zum L{\"o}sungsverhalten von Sauerstoff in bin{\"a}ren Legierungen unter besonderer Ber{\"u}cksichtigung experimenteller Ergebnisse am System Kupfer-Sauerstoff-Wismut bei 1200 Grad C},
  number    = {Mikroform},
  pages     = {89, 28 S. ; 2 Mikrofiches 24x},
  year      = {1983},
  language  = {de}
}
@book{Schleser2008,
  author    = {Schleser, Markus},
  title     = {Einsatz polymerimpr{\"a}gnierter, alkaliresistenter Glastextilien zur Bewehrung zementgebundener Matrices. (Aachener Berichte F{\"u}getechnik ; Bd. 6)},
  publisher = {Shaker},
  address   = {Aachen},
  isbn      = {978-3-8322-7696-6},
  pages     = {XVI, 129 S. : Ill., graph. Darst.},
  year      = {2008},
  language  = {de}
}
@book{Gebhardt2013,
  author    = {Gebhardt, Andreas},
  title     = {Generative Fertigungsverfahren : Additive Manufacturing und 3D Drucken f{\"u}r Prototyping - Tooling - Produktion},
  edition   = {4., neu bearbeitete und erweiterte Auflage},
  publisher = {Hanser},
  address   = {M{\"u}nchen},
  isbn      = {978-3-446-43651-0 ; 978-3-446-43652-7},
  doi       = {10.3139/9783446436527},
  pages     = {XXIV, 637 S. : zahlr. Ill. u. graph. Darst.},
  year      = {2013},
  language  = {de}
}
@book{Thomas2010,
  author    = {Thomas, Axel},
  title     = {Rhetorische Knallfr{\"o}sche : Zitatensammlung f{\"u}r Politik und Wirtschaft},
  publisher = {Neck + Heyn},
  address   = {Aachen},
  isbn      = {978-3-00-033037-7},
  pages     = {145 S. : Ill.},
  year      = {2010},
  language  = {de}
}
@book{Thomas2012,
  author    = {Thomas, Axel},
  title     = {Rhetorische Knallfr{\"o}sche - reloaded : Zitatensammlung f{\"u}r Politik und Wirtschaft},
  publisher = {Neck + Heyn},
  address   = {Aachen},
  pages     = {201 S. : Ill.},
  year      = {2012},
  language  = {de}
}
@book{Gebhardt2014,
  author    = {Gebhardt, Andreas},
  title     = {3D-Drucken : Grundlagen und Anwendungen des Additive Manufacturing (AM)},
  publisher = {Hanser},
  address   = {M{\"u}nchen},
  isbn      = {978-3-446-44238-2 ; 978-3-446-44237-5},
  pages     = {XIII, 186 S.},
  year      = {2014},
  language  = {de}
}