@manual{akthar2012rapid,
  author = {Akthar, Fareed and Hahne, Caroline},
  interhash = {74df9171c2bb0acb8f54aa3ea176393a},
  intrahash = {3aa7bff142a5bdba904af3d561d78045},
  title = {Rapid Miner 5: Operator Reference},
  url = {http://docs.rapid-i.com/r/rm-reference-en},
  year = 2012
}