1. Macroeconomic consequences of the unobserved economy;Feige,1982
2. The economics of the shadow economy,1985
3. Macroeconomic policy in the presence of an irregular sector;Ginsburgh,1985
4. The theory of unemployment reconsidered;Malinvaud,1977
5. De zwarte activiteiten;Mont;Tijdschrift voor Economie en Management,1982