[1] EPC global specification for RFID Air Interface, ”RadioFrequency identity protocols class-1 generation-2 UHF RFID protocol for communications at 860 MHZ -960 MHF,” VERSION 1.09 January 2005.

[2] “RFID journal”, http://www.rfid journal .com, last accessed September 9, 2010.

[3] ZIGBEE alliance, ZIGBEE specification, ZIGBEE document 053474r06, version 1.0,2005.

[4] Liu H, Bolicn, Nayaka, stojmenovici taxonomy and challenges of the integration of RFID and wireless sensor networks. IEEE network November, December 2008.

[5] Nikitin, P. V., "Antennas and Propagation in UHF RFID Systems", University of Washington, Electrical Engineering. http://www.ee.washington.edu/faculty/nikitin_pavel/papers/R FID_2008.pdf

[6] Cisco, "RFID Tag Considerations", May 2008,http://www.cisco.com/en/US/docs/solutions/Enterprise/ Mobility/wifich6.pdf