D. Xu, H. Miao, and N. Philbert. Computer and Information Science, 2009. ICIS 2009. Eighth IEEE/ACIS International Conference on, page 1035 -1040. (June 2009)
L. Zhu, M. Staples, and V. Tosic. 12th International IEEE Enterprise Distributed Object Computing Conference, 2008. EDOC '08, page 24--30. IEEE, (September 2008)
S. Zhang, and S. Goddard. International Conference on Information Technology: Coding and Computing, 2005. ITCC 2005, 2, page 443-- 448 Vol. 2. IEEE, (April 2005)
D. Xu, N. Philbert, Z. Liu, and W. Liu. Computer Science and Computational Technology, 2008. ISCSCT '08. International Symposium on, 2, page 450 --453. (December 2008)
F. Solms, P. Rooyen, and J. Kunicki. Communications and Signal Processing, 1994. COMSIG-94., Proceedings of the 1994 IEEE South African Symposium on, page 11--15. (October 1994)