@book{Willms1987,
  author    = {Willms, Herbert},
  title     = {Untersuchung der Wechselwirkung zwischen Str{\"o}mungsfeld und Reaktionsfront beim deflagrativen Abbrand von Kohlenwasserstoff-Luft-Gemischwolken},
  publisher = {VDI-Verl.},
  address   = {D{\"u}sseldorf},
  isbn      = {3-18-142719-5},
  pages     = {VII, 168 S. : Ill., graph. Darst.},
  year      = {1987},
  language  = {de}
}
@article{GrundmannGerhardt1996,
  author    = {Grundmann, Reinhard and Gerhardt, Hans Joachim},
  title     = {Hart im Wind - Windger{\"a}usche an Fassadenelementen},
  series = {db deutsche bauzeitung. 130 (1996), H. 8},
  journal   = {db deutsche bauzeitung. 130 (1996), H. 8},
  pages     = {96 -- 98},
  year      = {1996},
  language  = {de}
}
@book{GrundmannHallmannSchaefer1983,
  author    = {Grundmann, Reinhard and Hallmann, Willi and Sch{\"a}fer, Horst},
  title     = {Entwicklung eines einfachen Windmessgeraetes fuer Entwicklungslaender},
  publisher = {FIZ Energie, Physik, Mathematik},
  address   = {Eggenstein-Leopoldshafen},
  pages     = {137 S.},
  year      = {1983},
  language  = {de}
}
@book{GauchelDittrich1985,
  author    = {Gauchel, Joachim and Dittrich, G{\"u}nter},
  title     = {Die kinematische Analyse von mehrgliedrigen ebenen Kurbelgetrieben sowie die Synthese von sechgliedrigen Kurbelgetrieben zur Gliedlagenerf{\"u}llung : Bericht d. Inst. f{\"u}r Getriebetechnik u. Maschinendynamik d. Rhein.-Westf. Techn. Hochsch. Aaachen},
  publisher = {VDI-Verl.},
  address   = {D{\"u}sseldorf},
  pages     = {133 S. : graph. Darst., Tab.},
  year      = {1985},
  language  = {de}
}
@book{WillmsBeer1993,
  author    = {Willms, Herbert and Beer, Stefan},
  title     = {Regelung eines H2/O2-Dampferzeugers},
  publisher = {DLR, Zentrale Allgemeine Dienste, Versand},
  address   = {K{\"o}ln},
  pages     = {116 S. : graph. Darst.},
  year      = {1993},
  language  = {de}
}
@book{KnepperPfeiffer1999,
  author    = {Knepper, Ludger and Pfeiffer, Johann},
  title     = {Diplom-Ingenieur / Diplom-Ingenieurin (Fachhochschule) Maschinenbau, Energie- und W{\"a}rmetechnik},
  publisher = {Bertelsmann},
  address   = {Bielefeld},
  pages     = {Loseblattausg.},
  year      = {1999},
  language  = {de}
}
@book{Knepper2004,
  author    = {Knepper, Ludger},
  title     = {Aufbau eines Benchmark-Systems f{\"u}r operative Unternehmensprozesse},
  address   = {FH Aachen},
  year      = {2004},
  language  = {de}
}
@book{Knepper2004,
  author    = {Knepper, Ludger},
  title     = {Auslegung und Konstruktion von Hallentorantrieben},
  address   = {FH Aachen},
  year      = {2004},
  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}
}
@book{KnepperPfeiffer1998,
  author    = {Knepper, Ludger and Pfeiffer, Johann},
  title     = {Diplom-Ingenieur/Diplom-Ingenieurin (Fachhochschule) Maschinenbau Konstruktionstechnik},
  publisher = {Bertelsmann},
  address   = {Bielefeld},
  pages     = {Loseblattausg.},
  year      = {1998},
  language  = {de}
}