@INPROCEEDINGS{6566893, author={Shi, Lu and Yu, Shucheng and Lou, Wenjing and Hou, Y. Thomas}, booktitle={2013 Proceedings IEEE INFOCOM}, title={SybilShield: An agent-aided social network-based Sybil defense among multiple communities}, year={2013}, volume={}, number={}, pages={1034-1042}, doi={10.1109/INFCOM.2013.6566893}}