@INPROCEEDINGS{
       Author = {claffy, k. and Polyzos, G. and Braun, H.}, 
       Title = {{Traffic characteristics of the T1 NSFNET backbone}},
       BookTitle = {IEEE Conference on Computer Communications (INFOCOM)},
       Volume = {2},
       Pages = {885-893},
       Month = {Jan},
       Year = {1993},
       Keywords = {measurement methodology   passive data analysis}
}