@ARTICLE{4810133, author={Ren, Kui and Yu, Shucheng and Lou, Wenjing and Zhang, Yanchao}, journal={IEEE Transactions on Vehicular Technology}, title={Multi-User Broadcast Authentication in Wireless Sensor Networks}, year={2009}, volume={58}, number={8}, pages={4554-4564}, doi={10.1109/TVT.2009.2019663}}