Ernst & Young Hitting the Sweet Spot: The Growth of the Middle Class in Emerging Markets. 2013.
109
J. M. Lazenby and J. Olshevski Place of Death among Botswana’s Oldest Old // Omega 65 (2012): 173–187.
110
K. Hanson and P. Berman Private Health Care Provision in Developing Countries: A Preliminary Analysis of Levels and Composition // Data for Decision Making Project. Harvard School of Public Health, 2013; .
