D. Howard and A. M. MacEachren.
Interface Design for Geographic Visualization: Tools for Representing Reliability.
In Cartography and Geographic Information Science, vol. 23, no. 2, pp. 59--77, 1996.

Bibtex:

@Article{        howard:1996:IDGV,
  author =       {D. Howard and A. M. MacEachren},
  title =        {Interface Design for Geographic Visualization: Tools
                  for Representing Reliability},
  journal =      {Cartography and Geographic Information Science},
  volume =       {23},
  number =       {2},
  pages =        {59--77},
  year =         {1996},
}