1. Okun's Law and Potential GNP;Clark;Federal Reserve Board of Governors Working Paper,1983
2. The Economic and Budget Outlook: Fiscal Years 1988–1992;Congressional Budget Office,1987
3. British Factory, Japanese Factory;Dore,1973
4. La Stabilité du Lien Emploi Croissance et la Loi D'Okun: Une application à l'économie francaise;Favereau;Consommation,1981
5. Unemployment: Okun's Law, Labor Force, and Productivity;Friedman;Rev. Econ. Statist.,1974