Nikolai K. Vereshchagin Harry Buhrman Matthias Christandl Michal Koucký Zvi Lotker Boaz Patt-Shamir High Entropy Random Selection Protocols. 2007 Algebraic Methods in Computational Complexity http://drops.dagstuhl.de/opus/volltexte/2008/1309 conf/dagstuhl/2007P7411 db/conf/dagstuhl/P7411.html#VereshchaginBCKLP07