@conference {lahaie07a,
	title = {Revenue Analysis of a Family of Ranking Rules for Keyword Auctions},
	booktitle = {Proc. 8th ACM Conference on Electronic Commerce (EC{\textquoteright}07)},
	year = {2007},
	pages = {50{\textendash}56},
	url = {http:///econcs.seas.harvard.edu/files/econcs/files/lahaie07.pdf},
	author = {S{\'e}bastien Lahaie and David Pennock}
}
