Spatial Proximity and Complementarities in the Trading of Tacit Knowledge
The authors model knowledge-trading coalitions in which the transfer of tacit knowledge is unverifiable and requires face-to-face contact, making spatial proximity important. They believe that their framework may help explain the structure and stability of multimember technology trading coalitions such as Sematech and Silicon Valley.
Link
http://econwpa.wustl.edu:80/eps/mic/papers/0404/0404004.pdf