Building Better Systems
November 2020
Does the Marginal Tax Rate Affect Activity in the Informal Sector?
May 2014
Undeclared Work, Deterrence and Social Norms
July 2012
Undeclared work decreasing in Germany
June 2012
The majority of Danes buy undeclared services
March 2011
“Black” Activities Low in Germany in 2006
March 2008
Black Activities in Germany in 2001 and in 2004. A Comparison Based on Survey Data
June 2005
Black Activities in Germany in 2001 and in 2004
June 2005
Do-it-yourself work in North-Western Europe
June 2003
The Shadow Economy in Germany, Great Britain and Scandinavia
April 2003
The Shadow Economy in Denmark 1994. Measurement and Results
February 1995