@Unpublished{SCI:Moo2006a,
  author =    "C.R. Johnson and R. Moorhead and T. Munzner and H.
              Pfister and P. Rheingans and T. Yoo",
  title =     "{NIH/NSF} Visualization Research Challenges Report
              Summary",
  pages =     "66-73",
  year =      "2006",
  note =      "{NIH/NSF}",
  url =       "http://www.sci.utah.edu/publications/Moo2006a/NIH-NSF-VRC-Report-Final.pdf",
}