Andrew G. Berg and Jonathan D. Ostry, «Inequality and Unsustainable Growth: Two Sides of the Same Coin?», IMF Staff Discussion Note, April 8, 2011, p. 3, доступно по адресу: http://www.imf.org/external/pubs/ft/sdn/2011/sdn1108.pdf (дата обращения 25.03.2012).
