S. Amin, M., I. Reaz, M. B., Jalil, J. and F. Rahman, L. (2012) “Digital Modulator and Demodulator IC for RFID Tag Employing DSSS and Barker Code”, Journal of Applied Research and Technology, 10(6). doi: 10.22201/icat.16656423.2012.10.6.341.