@book{Grotendorst2003,
  author    = {Grotendorst, Johannes},
  title     = {ComputerMathematik mit Maple},
  publisher = {Forschungszentrum J{\"u}lich},
  address   = {J{\"u}lich},
  isbn      = {3-89336-325-4},
  pages     = {VI, 274 S. : Ill., graph. Darst.},
  year      = {2003},
  language  = {de}
}
@book{Fassbender2003,
  author    = {Faßbender, Heinz},
  title     = {Architektur eines F{\"u}hrungsinformationssystems unter Verwendung von Enterprise Java Beans},
  publisher = {FGAN-FKIE},
  address   = {Wachtberg},
  year      = {2003},
  language  = {de}
}
@book{Wosnitza2003,
  author    = {Wosnitza, Franz},
  title     = {Analyse station{\"a}rer, linearer Str{\"o}mungsfelder und Gleichstrom-Netzwerke},
  publisher = {Mainz},
  address   = {Aachen},
  isbn      = {3-86073-546-2},
  pages     = {208 S. : zahlr. graph. Darst.},
  year      = {2003},
  language  = {de}
}
@book{Laack2003,
  author    = {Laack, Walter van},
  title     = {A better history of our world / Vol. 3. Death},
  publisher = {van Laack},
  address   = {Aachen},
  isbn      = {978-3-936624-01-4},
  pages     = {276 S.},
  year      = {2003},
  language  = {en}
}
@book{Pfeiffer2003,
  author    = {Pfeiffer, Johann},
  title     = {3D-Freiformfl{\"a}chenmessung},
  publisher = {Fachhochsch.},
  address   = {Aachen},
  year      = {2003},
  language  = {de}
}