@article{SteffenHubrigTodtetal.2014,
  author    = {M. Steffen and Swetlana Hubrig and Helge Tobias Todt and M. Schoeller and Wolf-Rainer Hamann and Christer Sandin and Detlef Sch{\"o}nberner},
  title     = {Weak magnetic fields in central stars of planetary nebulae?},
  journal   = {Astronomy and astrophysics : an international weekly journal},
  volume    = {570},
  doi       = {10.1051/0004-6361/201423842},
  year      = {2014},
}