1. Akyildiz, I.F., Su, W., Sankarasubramaniam, Y., Cayirci, E.: Wireless sensor networks: A survey. Computer Networks 38, 393–422 (2002)
2. Bill, R., Cap, C., Kohfahl, M., Mund, T.: Indoor and outdoor positioning in mobile environments a review and some investigations on wlan positioning. Geographic Information Sciences 10, 91–98 (2004)
3. Gibson, J.: The mobile communications handbook. CRC Press, Boca Raton (1996)
4. Min, R., Bhardwaj, M., Cho, S., Sinha, A., Shih, E., Wang, A., Chandrakasan, A.: Low-power wireless sensor networks. In: International Conference on VLSI Design, pp. 205–210 (2001)
5. Savarese, C., Rabaey, J., Langendoen, K.: Robust positioning algorithms for distributed ad-hoc wireless sensor networks. In: USENIX Technical Annual Conference, pp. 317–327 (2002)