1. Multipart Pricing of Public Goods;Edward H Clark;Public Choice,1971
2. On the Measurement of the Utility of Public Work;Jules Dupuit;K. J. Arrow, Readings in Welfare Economics. NY: Irwin,1844
3. The Utility Analysis of Choices Involving Risks;Milton Friedman;Journal of Political Economy,1948
4. Incentives in Teams;Theodore Groves;Econometrica,1973