citation
Cook, Simon E.; Fujisaka, Sam. 2004. Spatial dimension of scaling up and out. 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. 53-63. (CIAT Publication no. 340; Economics and impact series 3)