@article{Butollo:1221,
      author        = "F. Butollo and J. Kusch and T. Laufer",
      title         = "{Buy it fair. Leitfaden zur beschaffung von computern nach
                       sozialen und okologischen kriterien  (Buy it fair. Guide
                       for procurement of computers as social and environmental
                       criteria)}",
      year          = "2009",
}