@Unpublished{SCI:Joh2006g,
  author =    "C.R. Johnson and R. Moorhead and T. Munzner and H.
              Pfister and P. Rheingans and T.S. Yoo and (Eds.)",
  title =     "NIH/NSF Visualization Research Challenges
              Report",
  year =      "2006",
  note =      "IEEE Press",
  isbn =      "0-7695-2733-7",
  url =       "http://www.sci.utah.edu/publications/Joh2006g/NIH-NSF-VRC-Report-Final.pdf",
}