在阅读文献时老有人引用到下边的文献，但就是没有真正找到原文，希望哪位大虾能慷慨助之，不胜感激。

Bernheim, D. and M. Whinston, 1986, “Menu Auctions, Resource Allocations and Economic Influence,” Quarterly Journal of Economics, 101: 1-31

Martimort, D., 1992, “Multi-Principaux avec Anti-Selection,” Annales d’Economie et de Statistiques, 28: 1-38 Martimort, D., 1996, “Exclusive Dealing, Common Agency, and Multiprincipals Incentive Theory,” RAND Journal of Economics, 27: 1-31

Bernheim, B. Douglas and Michael D. Whinston, 1986, Common Agency, Econometrica 54,923-42.

Holmstrom, Bengt and Paul Milgrom, 1991, Multitask principal agent analyses—Incentive contracts, asset ownership, and job design, Journal of Law, Economics, and Organization 7,24-52 (Special Issue).

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