@article{FuhrmannSeehaferValorietal.2011,
  author    = {Marcel Fuhrmann and Norbert Seehafer and Gherardo Valori and Thomas Wiegelmann},
  title     = {A comparison of preprocessing methods for solar force-free magnetic field extrapolation},
  url       = {http://www.aanda.org/index.php?option=com_article\&access=standard\&Itemid=129\&url=/articles/aa/full_html/ 2011/02/aa15453-10/aa15453-10.html},
  year      = {2011},
}