@InProceedings{SCI:Bar2005a,
  author =    "L. Barbosa and A.C. Salgado and F. de Carvalho and
              J. Robin and J. Freire",
  title =     "Looking at both the Present and the Past to
              Efficiently Update Replicas of Web Content",
  booktitle = "Proceedings of the 7th Annual ACM International
              Workshop on Web Information and Data Management",
  pages =     "75--80",
  year =      "2005",
  url =       "http://www.sci.utah.edu/publications/barbosa05/Barbosa_WWIDM2005a.pdf",
}