@conference{EURECOM+3500,
  author = {Isacenkova, Jelena and  Balzarotti, Davide},
  title = {Measurement and evaluation of a real world deployment of a challenge-response spam filter},
  booktitle = {IMC 2011, 11th ACM SIGCOMM Internet Measurement Conference, November 2-4, 2011, Berlin, Germany<br />},
  year = {2011},
  editor = {ACM},
  address = {Berlin},
  note = {© ACM, 2011. This is the author\&\#039;s version of the work. It is posted here by permission of ACM for your personal use. Not for redistribution. The definitive version was published in IMC 2011, 11th ACM SIGCOMM Internet Measurement Conference, November 2-4, 2011, Berlin, Germany<br />
 http://dx.doi.org/10.1145/2068816.2068855},
}