1. Barro, RJ and Grossman, HI . 1971: A general disequilibrium model of income and employment. American Economic Review 61: 82–93.
2. Bergson, A . 1961: The real national income of Soviet Russia since 1928. Harvard University Press: Cambridge.
3. Bergson, A . 1971: Comparative productivity and efficiency in the USA and the USSR. In: Eckstein, A (ed). Comparison of Economic Systems: Theoretical and Methodological Approaches. University of California Press: Berkeley.
4. Bergson, A . 1984: Income inequality under Soviet socialism. Journal of Economic Literature 22 (3): 1052–1099.
5. Collier, IL . 1986: Effective purchasing power in a quantity constrained economy: An estimate for the German Democratic Republic. Review of Economics and Statistics 68 (1): 24–32.