R. Theja, G. Kalyani, and K. Jyothi. International Journal on Recent and Innovation Trends in Computing and Communication, 3 (4):
1746--1749(April 2015)
S. Hick, B. Esslinger, and A. Wacker. The 10th International Conference on Education and Information Systems,Technologies and Applications (EISTA 2012), Orlando, Florida, USA, (17-20 Juli 2012)