1. Fairness and unemployment;Akerlof;American Economic Review, Papers and Proceedings,1988
2. Hysteresis and the European unemployment problem;Blanchard;NBER Macroeconomics Annual,1986
3. Brown, Alessio, Merkl, Christian, Snower, Dennis, J., 2006. Comparing the effectiveness of employment subsidies. Kiel Working Paper, No. 1302, November 2006
4. A theory of dual labor markets with application to industrial policy, discrimination and Keynesian unemployment;Bulow;Journal of Labor Economics,1986
5. Bundesagentur für Arbeit, 2006a. Arbeitsmarkt in Zahlen: Aktuelle Daten. Jahreszahlen 2005. Nuremberg, February 2006