@Article{Marienfeld2012,
  author    = {Florian Marienfeld and Ina Kathrin Schieferdecker and Jens Klessmann},
  title     = {Deutschlands erstes Portal f{\"u}r offene Daten. Da serviert der B{\"a}r},
  pages     = {104--107},
  url       = {https://www.heise.de/select/ix/archiv/2012/5/seite-104},
  volume    = {2012, no. 5},
  journal   = {iX-Magazin f{\"u}r professionelle Informationstechnik},
  publisher = {Heise},
  type      = {article},
  year      = {2012}
}