Xinyu Yang Ting Ma A Link Signature Based DDoS Attacker Tracing Algorithm under IPv6. 50-55 2007 FGCN (1) http://dx.doi.org/10.1109/FGCN.2007.15 conf/fgcn/2007 db/conf/fgcn/fgcn2007.html#YangM07