Dimitri do B. DeFigueiredo Balaji Venkatachalam Shyhtsun Felix Wu Bounds on the Performance of P2P Networks Using Tit-for-Tat Strategies. 11-18 2007 Peer-to-Peer Computing http://doi.ieeecomputersociety.org/10.1109/P2P.2007.12 conf/p2p/2007 db/conf/p2p/p2p2007.html#DeFigueiredoVW07