@misc{web2006witten,
  author = {Witten, Ian and Gori, Marco and Numerico, Teresa},
  interhash = {8e54756085b574381d8f35d20dc989c7},
  intrahash = {26dd2b2627dc5ee6100840328e0c20f0},
  isbn = {0-12-370609-2},
  title = {Web Dragons: Inside the Myths of Search Engine Technology },
  year = 2006
}