@INPROCEEDINGS {8101,
author={B. Vaidya and M. Chen and J. R. Rodrigues},
doi={},
booktitle={Conf. on Wireless Communication and Sensor Networks  - WCSN},
title={Improved Robust User Authentication Scheme for Wireless Sensor Networks},
year={2009},
month={December},
volume={0},
pages={0-0} 
}