1. 1. Z. Zheng, A. Liu, L. X. Cai, Z. Chen, and X. Shen, “ERCD: An energy-efficient clone detection protocol in WSNs,” in Proc. IEEE INFOCOM, Apr. 14-19, 2013, pp. 2436–2444.
   2.  R. Lu, X. Li, X. Liang, X. Shen, and X. Lin, “GRS: The green, reliability, and security of emerging machine to machine communications,” IEEE Commun. Mag., vol. 49, no. 4, pp. 28–35, Apr. 2011.
   3. F. Akyildiz, W. Su, Y. Sankarasubramaniam, and E. Cayirci, “Wireless sensor networks: A survey,” Comput. Netw., vol. 38, no. 4, pp. 393– 422, Mar. 2002.
   4. Liu, J. Ren, X. Li, Z. Chen, and X. Shen, “Design principles and improvement of cost function based energy aware routing algorithms for wireless sensor networks,” Comput. Netw., vol. 56, no. 7, pp. 1951–1967, May. 2012.
   5.  T. Shu, M. Krunz, and S. Liu, “Secure data collection in wireless sensor networks using randomized dispersive routes,” IEEE Trans. Mobile Comput., vol. 9, no. 7, pp. 941–954, Jul. 2010.