Mayanglambam, R. D. (Inventor), Iyer , N. P. (Inventor), Kunamaneni, S. (Inventor), Dhanabalan, A. (Inventor) & Radhakrishna, A. S. (Inventor), 2008, Patent No. US20080242825A1
Timothy, D. (Inventor) & Jordan, J. L. (Inventor), 9 Mar 2006, IPC No. G06Q 10/ 00 A I, Patent No. AU2005279632, Priority date 2 Sept 2005, Priority No. AU20050279632