@misc{Haag2006,
  author    = {Haag, Johannes},
  title     = {Seibt, J., Willem DeVries: Wilfrid Selars; Paderborn, Mentis, 2006},
  year      = {2006},
  language  = {de}
}
@article{Haag2006,
  author    = {Haag, Johannes},
  title     = {Descartes {\"u}ber Willen und Willensfreiheit},
  issn      = {0044-3301},
  year      = {2006},
  language  = {de}
}