1. Changes in U.S. and Southern Economics Department Rankings over Time;Berger MC;Growth and Change,1990
2. Buchanan, J. M., & Tullock, G. (1962). The Calculus of Consent: Logical Foundations of Constitutional Democracy. Ann Arbor: University of Michigan Press
3. Buchanan, J. M., & Wagner, R. E. (1977). Democracy in Deficit: the Political Legacy of Lord Keynes. New York: Academic Press
4. The Origins of Contributors to the AER;Cleary FR;American Economic Review,1960
5. Where are the Economists who Publish? Publication Concentration and Rankings in Europe base on Cumulative Publications;Combes PP;Journal of the European Economic Association,2003