9Wang Jianxin,Peng Bei,Jia Weijia.Design and Implementation of Virtual Computer Network Lab Based on NS2 in the Internet[J].Lecture Notes in Computer Science 3143,2004:346~353.
10Jianxin Wang,Songqiao Chen,Weijia Jia et al.The Design and Implementation of Virtual Laboratory Platform in Internet[C].In:Proceeding of The First International Conference on Web-based learning,2002:169~177.