@Book{baeza-yates1999modern,
  author = {Baeza-Yates, Ricardo A. and Ribeiro-Neto, Berthier},
  title  = {Modern Information Retrieval},

  year   = {1999},
  number = {},
  url    = {http://portal.acm.org/citation.cfm?id=553876},

  const  = {\ text}
}