@techreport {TR-2005-001,
   type = {Technical Report},
   author = {Daniel Stutzbach, Reza Rejaie},
   title = {Characterizing Two-Tier Overlay Topologies in Modern P2P File-Sharing Systems},
   institution = {University of Oregon, Computer and Information Sciences Department},
   number = TR-2005-001,
   year = 2005,
   note = {Available at \url{https://www.cs.uoregon.edu/Reports/TR-2005-001.pdf}},
}