S. Zhang, и S. Goddard. International Conference on Information Technology: Coding and Computing, 2005. ITCC 2005, 2, стр. 443-- 448 Vol. 2. IEEE, (апреля 2005)
X. Yang, L. Liu, N. Vaidya, и F. Zhao. The First Annual International Conference on Mobile and Ubiquitous
Systems: Networking and Services (MOBIQUITOUS), стр. 114 - 123. (августа 2004)