@book{Tietze2011,
  author    = {Tietze, J{\"u}rgen},
  title     = {Einf{\"u}hrung in die angewandte Wirtschaftsmathematik : das praxisnahe Lehrbuch - bew{\"a}hrt durch seine brillante Darstellung ; mit 500 Abbildungen und 1300 {\"U}bungsaufgaben. - 16., aktualisierte Aufl.},
  publisher = {Vieweg + Teubner},
  address   = {Wiesbaden},
  isbn      = {978-3-8348-8132-8 ; 978-3-8348-1530-9},
  pages     = {XVI, 598 S. : Ill., graph. Darst.},
  year      = {2011},
  language  = {de}
}
@book{OPUS4-4303,
  title     = {Ingenieurfreunde FH Aachen : 75 Jahre F{\"o}rderverein; Elektrotechnik und Informationstechnik, Luft- und Raumfahrttechnik, Maschinenbau und Mechatronik / [Hrsg.: Ingenieurfreunde FH Aachen e. V. ; Red.: H. J. Raatschen]},
  editor    = {Raatschen, Hans-J{\"u}rgen},
  publisher = {Klinkenberg},
  address   = {Aachen},
  isbn      = {978-3-941704-03-9},
  pages     = {112 S. : Ill., graph. Darst.},
  year      = {2010},
  language  = {de}
}
@book{EckeyKurth2010,
  author    = {Eckey, Ulrich and Kurth, Fabian},
  title     = {Hamburg 2010 : Hafencity, Jungfernstieg, IBA 2013, Chilehaus, Speicherstadt, BRT Architekten.},
  publisher = {FH Aachen},
  address   = {Aachen},
  pages     = {129 S. : zahlr. Ill.},
  year      = {2010},
  language  = {de}
}
@book{Laack2002,
  author    = {Laack, Walter van},
  title     = {A better history of our world / Vol. 2. Life},
  publisher = {van Laack},
  address   = {Aachen},
  isbn      = {978-3-8311-2597-5},
  pages     = {236 S.},
  year      = {2002},
  language  = {en}
}
@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{Laack2000,
  author    = {Laack, Walter van},
  title     = {Key to Eternity / Walter van Laack. [Transl. by Anneliese Wolstenholme]},
  publisher = {van Laack},
  address   = {Aachen},
  isbn      = {978-3-8311-0344-7},
  pages     = {256 S.},
  year      = {2000},
  language  = {en}
}
@book{Laack2000,
  author    = {Laack, Walter van},
  title     = {Eine bessere Geschichte unserer Welt / Bd. 1. Das Universum},
  publisher = {van Laack},
  address   = {Aachen},
  isbn      = {978-3-8311-0345-4},
  pages     = {196 S.},
  year      = {2000},
  language  = {de}
}
@book{Laack2001,
  author    = {Laack, Walter van},
  title     = {Eine bessere Geschichte unserer Welt / Bd. 2. Das Leben},
  publisher = {van Laack},
  address   = {Aachen},
  isbn      = {978-3-8311-2114-4},
  pages     = {248 S.},
  year      = {2001},
  language  = {de}
}
@book{Laack2002,
  author    = {Laack, Walter van},
  title     = {Eine bessere Geschichte unserer Welt / Bd. 3. Der Tod},
  publisher = {van Laack},
  address   = {Aachen},
  isbn      = {978-3-8311-3581-3},
  pages     = {248 S.},
  year      = {2002},
  language  = {de}
}
@book{Laack2001,
  author    = {Laack, Walter van},
  title     = {A better history of our world / Vol. 1. The universe},
  publisher = {van Laack},
  address   = {Aachen},
  isbn      = {978-3-8311-1490-0},
  pages     = {188 S.},
  year      = {2001},
  language  = {en}
}