@booklet {ng02,
	title = {Virtual Worlds: Fast and Strategyproof Auctions for Dynamic Resource Allocation},
	year = {2002},
	publisher = {Harvard University},
	url = {http://econcs.seas.harvard.edu/files/econcs/files/virtual_long.pdf},
	author = {Chaki Ng and David C. Parkes and Seltzer, Margo}
}
