@proceedings{JCDL:06,
  title={Opening Information Horizons -- Proc. of the 6th ACM/IEEE Joint Conference on Digtial Libraries (JCDL 2006)},
  booktitle={Opening Information Horizons -- Proc. of the 6th ACM/IEEE Joint Conference on Digital Libraries (JCDL 2006)},
  editor={Michael Nelson and Cathy Marshall and Gary Marchionini},
  address={New York},
  publisher={ACM},
  year=2006,
}