@INPROCEEDINGS{GBC06-email_filtering-TACS,
   AUTHOR       = {Anurag Garg and Roberto Battiti and Roberto Cascella},
   BOOKTITLE    = {Proceedings of the 20th International Conference on Advanced Information Networking and Applications - IEEE International Workshop on Trusted and Autonomic Computing Systems (TACS-06)},
   TITLE        = {``May I borrow Your Filter?'' Exchanging Filters to 
      Combat Spam in a Community},
   YEAR         = {2006},
   ADDRESS      = {Vienna, Austria},
   MONTH        = {April 18-20},
   PAGES        = {489--493},
   PUBLISHER    = {IEEE Computer Society},
   DOI          = {http://dx.doi.org/10.1109/AINA.2006.1}
}