1. The Risk Octagon: A Comprehensive Framework for Assessing Sovereign Risks;Cottarelli;presented in University of Rome “La Sapienza,(2011)
2. Finding the Tipping Point: When Sovereign Debt Turns Bad;Caner,(2011)
3. Sovereign Spreads: Global Risk Aversion, Contagion or Fundamentals?;Caceres;IMF Working Papers, WP/10/120,(2010)
4. A Practical Guide to Public Debt Dynamics, Fiscal Sustainability, and Cyclical Adjustment of Budgetary Aggregate;Escolano,(2010)
5. Government Ponzi Games and the Sustainability of Public Debt under Uncertainty;Bartolini,(1992)