@book{Laack2011,
  author    = {Walter van Laack},
  title     = {To perceive the world with logic},
  series    = {Walter van Laack. [Transl. by Anneliese Wolstenholme] / 1. ed.},
  isbn      = {978-3-936624-08-3},
  year      = {2011},
}