3DIAS D, KISH W, MUKHERJEE R,et al. A scalable and highly available server [ C ]. In Proceeding of COMPCON 1996. Santa Clara: IEEE -CS Press, 1996 : 85 - 92.
4ENGELSCHALL R S. Load balancing your web site [J]. Web Techniques Magazine,1998, 3(5) :85 -93.
5CICSO A. Local director documents [ CD/OL]. [ 2008 - 03 - 23 ]. http: //www. cisco, com.
6SANKAR C S,RAJU P K. Use of multi -media tutorialware to teach real -world decision making skills[J]. Information Technology and Management,2001,2(4) :443 -457.