@article{shani2011evaluating,
  author = {Shani, G. and Gunawardana, A.},
  interhash = {c93599e113544cde3f44502c88775c20},
  intrahash = {63a1a401a35be851b9864966184c6815},
  journal = {Recommender Systems Handbook},
  pages = {257--297},
  publisher = {Springer},
  title = {Evaluating recommendation systems},
  url = {http://scholar.google.de/scholar.bib?q=info:AW2lmZl44hMJ:scholar.google.com/&output=citation&hl=de&as_sdt=0,5&ct=citation&cd=0},
  year = 2011
}

@article{maitra02,
  author = {Maitra, R.},
  interhash = {7dfd1fe3496527a4253733a06f990fcf},
  intrahash = {5c9b8ae716d306921bb1c64cefa2ab84},
  isabout = {Statistical and Data and Data_Mining and Computing_Methodologies and ACMTopic and Database_Management and Information_Systems and Image_Representation and Database_Applications and Image_Processing_And_Computer_Vision},
  journal = {J. Ind. Soc. Prob. Statist.},
  key = {maitra02},
  label = {A Statistical Perspective on Data Mining},
  title = {A Statistical Perspective on Data Mining},
  type = {Article},
  url = {http://www.public.iastate.edu/~maitra/papers/datamining.pdf},
  year = 2002
}

@book{siegel:b88,
  author = {Siegel, S. and Castellan, N.J.},
  edition = {Second},
  interhash = {a7aa17712ec15867d7803811e5267a88},
  intrahash = {e2ac0dc902159ea0b174e65a72cb40e0},
  publisher = {McGraw--Hill, Inc.},
  title = {Nonparametric statistics for the behavioral sciences},
  year = 1988
}