1. The role of monetary policy;Friedman;American Economic Review,1968
2. Hysteresis and ranges or intervals for equilibrium unemployment;Cross,1997
3. Structural Slumps: the Modern Equilibrium Theory of Unemployment, Interest and Assets;Phelps,1994
4. European unemployment: a survey;Bean;Journal of Economic Literature,1994
5. Unemployment: getting the questions right and some of the answers;Blanchard,1990