@booklet {sanghvi04,
	title = {Hard-to-Manipulate Combinatorial Auctions},
	year = {2004},
	publisher = {Harvard University},
	url = {http://econcs.seas.harvard.edu/files/econcs/files/hard_to_manipulate.pdf},
	author = {Saurabh Sanghvi and David C. Parkes}
}
