@InProceedings{SCI:Fre2004b,
  author =    "J. Freire and M. Ramanath and L. Zhang",
  title =     "A Flexible Infrastructure for Gathering XML
              Statistics and Estimating Query Cardinality",
  booktitle = "Proceedings of the 20th International Conference
              on Data Engineering",
  pages =     "857",
  year =      "2004",
  isbn =      "0-7695-2065-0",
  url =       "http://www.sci.utah.edu/publications/freire04/Freire_ICDE2004.pdf",
}