1. I. F. Akyildiz, W. Su, Y. Sankarasubramaniam, and E. Cayirci, “A survey on sensor networks,” IEEE Comm. Magazine, pp. 102- 114, Aug’ 02.
2. J. N. Al-Karaki and A. E. Kamal, “Routing techniques in wireless sensor networks: A survey,” IEEE Wireless Communications, Dec’ 04.
3. K. Akkaya and M. Younis, “A survey on routing protocols for wireless sensor networks,” Ad Hoc Networks, vol. 3, Nov’ 03.
4. G. M. Shafiullah, A. Gyasi-Agyei, and P. Wolfs, “Survey of wireless communications applications in the railway industry,” in Conf. on Wireless Broadband and Ultra Wideband Comm., Sydney, Aug’ 07.
5. W. Heinzelman, J. Kulik, and H. Balakrishnan, “Adaptive protocols for information dissemination in wireless sensor networks,” in 5th ACM/ IEEE mobicom, Seattle, WA, Aug’ 99, pp. 174- 185.