Cheong, W. H., T. C. Ling, M. Hj. Yaacob, and K. K. Phang. “Performance Analysis on Security Association in High Speed ATM Networks”. Malaysian Journal of Computer Science, vol. 16, no. 1, June 2003, pp. 68-76, http://ajba.um.edu.my/index.php/MJCS/article/view/6120.