@TECHREPORT{
       Author = {John, W. and Dusi, M. and claffy, k.}, 
       Title = {{Estimating Routing Symmetry on Single Links by Passive Flow Measurements}},
       Institution = {ACM 1st International Workshop on TRaffic Analysis and Classification (TRAC)},
       Month = {Mar},
       Year = {2010},
       Keywords = {data   passive data analysis   measurement methodology   routing   software/tools}
}