@INPROCEEDINGS{
       Author = {Huffaker, B. and claffy, k. and Nemeth, E.}, 
       Title = {{Tools to visualize the Internet multicast backbone}},
       BookTitle = {International Networking Conference (INET) '99},
       Publisher = {The Internet Society},
       Address = {San Jose, CA},
       Month = {Jun},
       Year = {1999},
       Keywords = {software/tools   visualization}
}