@conference {parkes99d, title = {iBundle: An Efficient Ascending Price Bundle Auction}, booktitle = {Proc. 1st ACM Conf. on Electronic Commerce (EC{\textquoteright}99)}, year = {1999}, pages = {148{\textendash}157}, url = {http://econcs.seas.harvard.edu/files/econcs/files/ibundle.pdf}, author = {David C. Parkes} }