@Article{SCI:Fre2008b,
  author =    "J. Freire and D. Koop and C.T. Silva",
  title =     "Provenance for Computational Tasks: A Survey",
  journal =   "Computing in Science and Engineering",
  volume =    "10",
  number =    "3",
  pages =     "11--21",
  year =      "2008",
  keywords =  "vistrails, provenance, workflow management",
  url =       "http://www.sci.utah.edu/publications/freire08/cise2008a.pdf",
}