@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{Lohse2000,
  author    = {Lohse, Wolfram},
  title     = {Stahlbau. Thiele, Albrecht [Hrsg.], Lohse, Wolfram [Bearb.] Bd. 2. 19., {\"u}berarb. Aufl.},
  publisher = {Teubner},
  address   = {Stuttgart [u.a.]},
  isbn      = {3-519-15255-X},
  pages     = {378 S. : graph. Darst.},
  year      = {2000},
  language  = {de}
}