1. 1. RFID Journal. (2003). Gillette Confirms RFID Purchase. RFID Journal. Available at: http://www.rfidjournal.com/article/articleview/258/1/1 /.
   2. Stockman, H. (1948). Communication by Means of Reflected Power. Proceedings of the Institute of Radio Engineers. October.pp 1196-120
   3. Maltoni D, D. Maio, A. K. Jain, S. Prabhaker (2003), “Handbook of Fingerprint Recognition”, Springer, New York,Pp 13 -20
   4. Longe O.O.(2009),”Implementation of Student Attendance System using RFID Technology”, B. Tech Project Report, Ladoke Akintola University of Technology, Ogbomoso, Nigeria.
   5. T.S. Lim, S.C. Sim and M.M. Mansor “RFID Based Attendance System,” in Proceedings of the IEEE Symposium on Industrial Electronics and Applications, October 2009.
   6. Mahyidin, M.F. “Student Attendance Using RFID System” 2008; Available from: http://umpir.ump.edu.my.
   7. B. M. Stephen, E. S. Sanjayand R. W. John,“RFID Technology and Applications”, Cambridge University Press,(2008).