@TECHREPORT{
       Author = {Verkaik, P. and Broido, A. and claffy, k. and Gao, R. and Hyun, Y. and van der Pol, R.}, 
       Title = {{Beyond CIDR Aggregation}},
       Institution = {Cooperative Association for Internet Data Analysis (CAIDA)},
       Month = {Feb},
       Year = {2004},
       Keywords = {routing   topology}
}