@conference {parkes01,
	title = {Achieving Budget-Balance with Vickrey-Based Payment Schemes in Exchanges},
	booktitle = {Proc. 17th International Joint Conference on Artificial Intelligence (IJCAI{\textquoteright}01)},
	year = {2001},
	pages = {1161{\textendash}1168},
	url = {http://econcs.seas.harvard.edu/files/econcs/files/combexch01.pdf},
	author = {David C. Parkes and Jayant R. Kalagnanam and Marta Eso}
}
