B. V, A. Unnikrishnan, and K. Balakrishnan. International Journal of Computer Science, Engineering and Information Technology (IJCSEIT), 2 (2):
151-157(April 2012)
M. Paul, and J. Mandal. International Journal of Computer Science, Engineering and Information Technology (IJCSEIT), volume 2 of IFIP Advances in Information and Communication Technology, page 31-42. Springer, (June 2012)