Book Chapter
White, D.
White, Douglas. 2004. Estimating impacts of geographic information systems research: Using rubbery scales and fuzzy criteria. In: Pachico, Douglas H.; Fujisaka, Sam (eds.). Scaling up and out: Achieving widespread impact through agricultural research. Centro Internacional de Agricultura Tropical (CIAT), Cali, CO. p. 37-52. (CIAT Publication no. 340; Economics and impact series 3)