@article{BeutelLeuzingerBohleberRuegeretal.2012,
  author    = {Manfred Beutel and Marianne Leuzinger-Bohleber and Bernhard R{\"u}ger and Ulrich Bahrke and Alexa Negele and Antje Haselbacher and Georg Fiedler and Wolfram Keller and Martin Hautzinger},
  title     = {Psychoanalytic and cognitive-behavior therapy of chronic depression : study protocol for a randomized controlled trial},
  journal   = {Trials},
  volume    = {13},
  number    = {117},
  doi       = {10.1186/1745-6215-13-117},
  year      = {2012},
}