1. Baldassarini A. e Pascarella C. (2003). The Italian Approach to Estimating the Extent of the Non-observed Economy: Methods and Results. Conference on the Non-observed Economy: Measurement and Policy Issues, Università di Tor Vergata, Rome, 20-21 January 2003.
2. Boeri T. e Garibaldi P. (2002). Shadow Activity and Unemployment in a Depressed Labour Market. CEPR Discussion Paper, No. 3433.
3. Real Exchange Rate Adjustment, Wage-Setting Institutions, and Fiscal Stabilization Policy: Lessons of the Eurozone's First Decade
4. Bovi M. (1999). Un miglioramento del metodo di Tanzi per la stima dell’economia sommersa in Italia. ISTAT, Rivista di Statistica Ufficiale, No. 2.
5. The Dark, and Independent, Side of the Italian Labour Market