OECD Publishing. “OECD Factbook 2014: Economic, Environmental and Social Statistics.” May 6, 2014. Polivka, Anne E. “Contingent and alternative work arrangements, defined.” Monthly Labor Review 1999, 119(3). Sheldon, Michael. “Income Targeting and the Ridesharing Market.” Unpublished Manuscript. 2014. Available at https://sites.google.com/site/michaelsheldonhomepage/working-papers. 35
