@inproceedings{GJ03,
 author    = {Philippe Golle and Markus Jakobsson},
 title     = {Reusable anonymous return channels},
 booktitle = {WPES '03: Proceedings of the 2003 ACM workshop on Privacy in the electronic society},
 year      = {2003},
 isbn      = {1-58113-776-1},
 pages     = {94--100},
 location  = {Washington, DC},
 doi       = {http://doi.acm.org/10.1145/1005140.1005155},
 publisher = {ACM Press},
 address   = {New York, NY, USA},
 }