@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{Paschmann2000,
  author    = {Paschmann, Hans},
  title     = {100 Jahre Bauwesen FH Aachen 1900 - 2000 : Fachbereiche Architektur und Bauingenieurwesen / [Schriftleitung: H. Paschmann]},
  publisher = {Fachhochschule Aachen},
  address   = {Aachen},
  pages     = {237 S. : zahlr. Ill. und graph. Darst.},
  year      = {2000},
  language  = {de}
}