1.On the Revelation of Preferences for Publis Goods (with J.GREEN),Journal of Public Economics,8:79-93,1977
2.A Complete Solution to a Class of Principal-Agent Problems with an Application to the Control of a Self-Managed Firm (with R.GUESNERIE),Journal of Ppublic Economics ,25:329-369,1984
3. Price-Quantity Duality in Planning Procedures (with J.C.ROCHET),Social Choice and Welfare ,2;311-322,1985
4. Optimal Taxation of a Non-Linear Pricing Pricing Monopolist ,Journal of Public Economics,33:137-155,1987
Part 2 Regulation
5.Using Cost Observation to Regulate Firms (with J.TIROLE),Journal of Political Economy,94,614-641,1986
6.Auctiong Incentive Contracts (with J.TIROLE),Journal of Political Economy,95:921-937,1987
7.Repeated Auctions of Incentive Cntracts,Investment,and Bidding Parity with an Application to Takeovers,(with J.TIROLE),RAND Journal of Economics,19:516-537.1988
8.The Regulation of Multiproduct Firms,Part1:theory (with J.TIROLE),Journal of Public Economics,43:1-36,1990
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