@conference {lai_ec12, title = {Monotone Branch-and-Bound Search for Restricted Combinatorial Auctions}, booktitle = {Proceedings of the 13th ACM Conference on Electronic Commerce (EC {\textquoteright}12)}, year = {2012}, pages = {705-722}, url = {http://econcs.seas.harvard.edu/files/econcs/files/lai_ec12.pdf}, author = {John K. Lai and David C. Parkes} }