Qin and Zhang 2011

Road to Specialization in Agricultural Production:
Tales of 18 Natural Villages in China

-Sees crop specialization occur due to transaction costs

http://ageconsearch.umn.edu/bitstream/103882/4/Impact%20of%20Road%20Access%20on%20Agricultural%20Production%20in%20China%202011%20AAEA.pdf

agriculture roads and ecnomic development in Uganda: Gollin Rogerson 2010

 Uses GE and size of quasi subsistence sector.  Show highly sensitive to agric prod levels and transportation costs

http://cbey.research.yale.edu/uploads/Environmental%20Economics%20Seminar/Gollin_and_Rogerson_-_Agriculture_Roads_and_Economic_Development_in_Uganda,_3-19-10.pdf

Linkages Between Market Participation and Productivity Rios 2008

only looks at output markets