@article{Rath2013,
  author    = {Norbert Rath},
  title     = {K{\"u}nstliche Paradiese [http://www.kalmenzone.de/wordpress/wp-content/uploads/downloads/2013/08/kalmenzone_Heft2.pdf]},
  journal   = {Kalmenzone},
  number    = {2},
  pages     = {33 -- 41},
  year      = {2013},
}