@TECHREPORT{
       Author = {Huffaker, B. and Fomenkov, M. and claffy, k.}, 
       Title = {{Geocompare: a comparison of public and commercial geolocation databases - Technical Report }},
       Institution = {Cooperative Association for Internet Data Analysis (CAIDA)},
       Month = {May},
       Year = {2011},
       Keywords = {overview   measurement methodology}
}