1. Measuring Representation: Perils of the Correlation Coefficient;Christopher H Achen;American Journal of Political Science,1977
2. Swiss Worlds of Welfare;Klaus Armingeon;West European Politics,2004
3. Constituency Opinion and Congressional Policy Making: The Reagan Defense Buildup;Larry M Bartels;American Political Science Review,1991
4. Political Institutions and Policy Choices: Evidence from the United States;Timothy Besley;Journal of Economic Literature,2003
5. International Encyclopaedia for Labour Law and Industrial Relations;Roger Blanpain;Legislations. Kluwer,1986