When I had looked into it, these resources had been helpful for research:
Wireless Networking in the Developing world -- http://wndw.net/ -- A useful guidebook on the tech needed for large scale community mesh networks
Guifi.net -- https://en.wikipedia.org/wiki/Guifi.net -- A huge wireless mesh in Spain, there's a linked economic report in the references that's very good but may be unavailable at the moment. It may have been, or be contained within, "The Cook Report on Internet Protocol" Volume XX1, No, 12 & XXII, No 1 March April 2013 ISSN 1071 - 6327. The report is very long and covers quite a bit of the social and technical challenges faced by Guifi.net