1. A note on measuring the unofficial economy in the former Soviet Republics;Alexeev;Economics of Transition,2003
2. Size, Causes and Consequences of the Underground Economy: An International Perspective,2005
3. Berg, A., Borensztein, E., Sahay, R., Zettelmeyer, J., 1999. The evolution of output in transition economies: Explaining the differences. Working paper WP/99/73, IMF
4. Breusch, T., 2005. School of Economics, Faculty of Economics and Commerce Australian National University, http://129.3.20.41/eps/em/papers/0507/0507003.pdf, pp. 1–35
5. Size, causes and consequences of the underground economy: An international perspective;Breusch;Economic Record,2006