1. Adam, S. (1776). An Inquiry into the Nature and Causes of the Wealth of Nations. Vol. V, Chap. 2, pp. 827.
2. Allingham, M., & Sandmo, A. (1972). Income Tax Evasion: A Theoretical Analysis. Journal of Public Economic, 1, 323–338.
3. Alstadsaeter, A., & Jacob, M. (2013a). The Effect of Awareness and Incentives on Tax Evasion (CESIFO Working Paper No. 4369).
4. Alstadsaeter, A., & Jacob, M. (2013b). Who Participates in Tax Avoidance? (CESIFO Working Paper No. 4219).
5. Andreas, B., & Schneider, F. (2007). Shadow Economies and Corruption All Over the World: Revised Estimates for 120 Countries. Economics: The Open-Access, Open-Assessment E-Journal, 1(2007–9), 1.