X. J. Yan, L. M. Lu and L. Z. Xu, “The Application of Wireless Sensor Network in the Irrigation Area Automatic System,” International Conference on Networks Security, Wireless Communications and Trusted Computing, Vol. 2, 25-26 April 2009, pp. 21-24.
 T. H. Fan, L. Z. Xu, X. W. Zhang and H. B. Wang, “Research and Design of a Node of Wireless Multimedia Sensor Network,” Proceedings of the 5th International Conference on Wireless Communications, Networking and Mobile Computing, Piscataway, 24-26 September 2009.
 H. B. Wang, Y. L. Zhong, J. H. Zhang, X. J. Yan, L. Z. Xu, “Based on Sleep Scheduling for Wireless Sensor Networks Clustering Protocol,” Microelectronics & Computer, Vol. 27, No. 8, 2010, pp. 226-229.
 O. Younis and S. Fahmy, “HEED: A Hybrid, Energy Efficient, Distributed Clustering Approach for Ad-Hoc Sensor Networks”, IEEE Trans on Mobile Computing, Vol. 3, No. 4, 2004, pp. 660-669. doi:10.1109/TMC.2004.41
 A. B. M. A. Al Islam, C. S. Hyder, H. Kabir and M. Naznin, “Finding the Optimal Percentage of Cluster Heads from a New and Complete Mathematical Model on LEACH,” Wireless Sensor Network, Vol. 2, No. 2, 2010, pp. 129-140.
 J. Zhu, J. Li and H. Gao, “Tasks Allocation for Real- Time Applications in Heterogeneous Sensor Networks for Energy Minimization,” 8th ACIS International Conference on Software Engineering, Artificial Intelligence, Networking, and Parallel/Distributed Computing (SNPD 2007), Qingdao, 30 July-1 August 2007, pp. 20-25.
 G. Anastasi, M. Conti, M. Di Francesco and A. Passarella, “Energy Conservation in Wireless Sensor Networks,” A survey, Ad Hoc Networks, Vol. 7 No. 3, 2009, pp. 537- 568. doi:10.1016/j.adhoc.2008.06.003
 P. Tillapart, T. Thumthawatworn and P. Pakdeepinit, “Method for Cluster Heads Select Ion in Wireless Sensor Network,” Proceedings of the 2004 IEEE Aerospace Conference, IEEE, Piscataway, 6-13 March 2004, pp. 3615-3623.
 A. Manjeshwar, D. P. Grawal, “TEEN: A Protocol for Enhanced Efficiency in Wireless Sensor Networks,” Proceedings of the 15th Parallel and Distributed Processing Symposium, IEEE Computer Society, San Francisco, 23-27 April 2001.
 Y. Tao and Y. L. Zheng, “The Combination of the Optimal Number of Cluster-Heads and Energy Adaptive Cluster-Head Selection Algorithm in Wireless Sensor Networks,” WiCOM, International Conference, Wuhan, 23-25 September 2011, pp. 1-4.