@conference{331,
  title = {{Special Issue on Visual Analytics and Knowledge Discovery}},
  year = {2009},
  journal = {Special issue of SIGKDD Explorations},
  volume = {11},
  month = {December},
  url = {http://www.sigkdd.org/explorations/issue.php?volume=11&issue=2&year=2009&month=12},
  language = {eng},
}