B. Jiang and A. Brown and F.J. Ormeling.
Some Perceptual Aspects of Colouring Uncertainty.
In Jan-Menno Kraak and Martin Molenaar (Eds.), Advances In GIS Research II, UK: Taylor & Francis, pp. 477--490, 1996.

Bibtex:

@InProceedings{  jiang:1996:SPAC,
  author = 	 {B. Jiang and A. Brown and F.J. Ormeling},
  title = 	 {Some Perceptual Aspects of Colouring Uncertainty},
  booktitle =    {Advances In GIS Research II, UK: Taylor \& Francis},
  pages = 	 {477--490},
  year = 	 {1996},
  editor = 	 {Jan-Menno Kraak and Martin Molenaar},
}