@inbook {parkes02a,
	title = {Price-Based Information Certificates for Minimal-Revelation Combinatorial Auctions},
	booktitle = {Agent Mediated Electronic Commerce IV: Designing Mechanisms and Systems (LNAI 2531)},
	year = {2002},
	pages = {103{\textendash}122},
	publisher = {Springer-Verlag},
	organization = {Springer-Verlag},
	url = {http://econcs.seas.harvard.edu/files/econcs/files/certificates.pdf},
	author = {David C. Parkes},
	editor = {J. Padget and D. Parkes and Sadeh, N. and O.Shehory and W.Walsh}
}
