Bénabou, Roland, and Efe Ok. 2001. “Mobility As Progressivity: Ranking Income Processes According to Equality of Opportunity”. National Bureau of Economic Research. Reference Link
Bénabou, Roland, and Efe Ok. 2001. “Social Mobility and the Demand for Redistribution: The POUM Hypothesis”. The Quarterly Journal of Economics 116. MIT Press: 447–487. Reference Link