Vahab S. Mirrokni, Michael Schapira, Jan Vondrák. Tight information-theoretic lower bounds for welfare maximization in combinatorial auctions. In Lance Fortnow, John Riedl, Tuomas Sandholm, editors, Proceedings 9th ACM Conference on Electronic Commerce (EC-2008), Chicago, IL, USA, June 8-12, 2008. pages 70-77, ACM, 2008. [doi]
Abstract is missing.