1. Wireless technology reshapes retailers;Bednarz;Network World,2002
2. Traceable air baggage handling system based on RFID tags in the airport;Zhang;JTAER,2008
3. SkyeTek 2004 http://www.skyetek.com/Portals/0/Documents/Products/SkyeModule M1Mini DataSheet.pdf
4. Crossbow Technology Inc. http://www.xbow.com/.
5. Baracoda An efficient way to add RFID reader/encoder to Bluetooth PDA and mobile phones http://www.baracoda.com/baracoda/products/p 21.html.