1. Returns to Agricultural Research and Extension Programmes: An ex-ante approach;Araji;American Journal of Agricultural Economics,1978
2. Arndt, T. M., Dalrymple, D. G. and Ruttan, V. W. (eds.) (1977). Resource Allocation and Productivity in National and International Agricultural Research, University of Minnesota Press.
3. Social Rates of Return and Other Aspects of Agricultural Research: The Case of Cotton Research in Sao Paulo, Brazil;Ayer;American Journal of Agricultural Economics,1972
4. General Equilibrium Computations of the Marginal Welfare Costs of Taxes in the United States;Ballard;American Economic Review,1985