@TechReport{doppel-user-tech-rep07,
  author =       {Chris Karlof and Umesh Shankar},
  title =        "{A Usability Study of Doppelganger, A Tool for Better Browser Privacy}",
  institution =  {University of California at Berkeley},
  year =         {2007},
  month =        September,
  number =    {UCB/EECS-2007-116},
}