Anton Likhodedov Tuomas Sandholm Mechanism for Optimally Trading Off Revenue and Efficiency in Multi-unit Auctions. 92-108 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3048&spage=92 2003 conf/amec/2003 AMEC db/conf/amec/amec2003.html#LikhodedovS03