@book{Zastrow1986,
  author    = {Zastrow, Udo},
  title     = {Zur L{\"o}sung von Halbraumproblemen nach der Spannungsfunktionenmethode : neue u. alte Ans{\"a}tze f{\"u}r Verschiebungs- u. Spannungsfunktionen in d. r{\"a}uml. Elastizit{\"a}tstheorie},
  publisher = {VDI-Berl.},
  address   = {D{\"u}sseldorf},
  isbn      = {3-18-143318-7},
  pages     = {XI, 331 S. : graph. Darst.},
  year      = {1986},
  language  = {de}
}
@book{Zastrow1979,
  author    = {Zastrow, Udo},
  title     = {Berechnung von anisotropen Scheiben mit gemischten Randbedingungen durch singulaere Integralgleichungen},
  year      = {1979},
  language  = {de}
}
@book{JanzGoedhuysMohnen2008,
  author    = {Janz, Norbert and Goedhuys, Micheline and Mohnen, Pierre},
  title     = {Knowledge-based productivity in "low-tech" industries : evidence from firms in developing countries / Goedhuys, Micheline ; Janz, Norbert ; Mohnen, Pierre},
  publisher = {UNU-MERIT},
  address   = {Maastricht},
  pages     = {34 S.},
  year      = {2008},
  language  = {en}
}
@book{JanzGoedhuysMohnen2006,
  author    = {Janz, Norbert and Goedhuys, Micheline and Mohnen, Pierre},
  title     = {What drives productivity in Tanzanian manufacturing firms: technology or institutions? / Goedhuys, Micheline ; Janz, Norbert ; Mohnen, Pierre},
  publisher = {UnU-MERIT},
  address   = {Maastricht},
  pages     = {22 S.},
  year      = {2006},
  language  = {en}
}
@book{Hanrath1988,
  author    = {Hanrath, Wilhelm},
  title     = {Irreduzible Darstellungen von Raumgruppen},
  address   = {Aachen},
  pages     = {250 S.},
  year      = {1988},
  language  = {de}
}
@book{WeberKaminskyKallweitetal.2005,
  author    = {Weber, Hans-Joachim and Kaminsky, Radoslav and Kallweit, Stephan and Simons, Antoine},
  title     = {PIV measurements with high temporal resolution behind artificial heart valves},
  pages     = {9 S.},
  year      = {2005},
  language  = {en}
}
@book{KaminskyKallweitWeberetal.2006,
  author    = {Kaminsky, Radoslav and Kallweit, Stephan and Weber, Hans-Joachim and Simons, Antoine and Verdonck, Pascal},
  title     = {Stereo high speed PIV measurements behind two different artificial heart valves},
  pages     = {9 S. : Ill., graph. Darst.},
  year      = {2006},
  language  = {en}
}
@book{MertensVeldenKelmetal.2000,
  author    = {Mertens, Josef and Velden, Alexander van der and Kelm, Roland and Kokan, David},
  title     = {Application of MDO to large subsonic transport aircraft},
  publisher = {American Institute of Aeronautics and Astronautics},
  address   = {Reston, Va.},
  pages     = {12 S. : zahlr. Ill. u. graph. Darst.},
  year      = {2000},
  language  = {en}
}
@book{Mertens1983,
  author    = {Mertens, Josef},
  title     = {Instation{\"a}re Str{\"o}mungen von Gasen mit brennbaren Partikeln},
  address   = {Aachen},
  pages     = {III, 245 S. : graph. Darst.},
  year      = {1983},
  language  = {de}
}
@book{Call2008,
  author    = {Call, Guido},
  title     = {Kunden- und Servicemanagement : erfolgreich der Servicew{\"u}ste entgehen},
  publisher = {Kovac},
  address   = {Hamburg},
  isbn      = {978-3-8300-3890-0},
  pages     = {147 S. : Ill., graph. Darst.},
  year      = {2008},
  language  = {de}
}