@techreport{cosic-2007-001,
   author = {Len Sassaman and Bart Preneel},
   title = {{The Byzantine Postman Problem: A Trivial Attack Against PIR-based Nym Servers}},
   year = {2007},
   month = {February},
   institution = {Katholieke Universiteit Leuven},
   number = {ESAT-COSIC 2007-001},
   url = {http://www.cosic.esat.kuleuven.be/publications/article-880.pdf},
}