@proceedings{SIGIR:93,
  title={Proceedings of the Sixteenth Annual International {ACM} {SIGIR} Conference on Research and Development in Information Retrieval},
  address={New York},
  publisher={ACM},
  booktitle={Proceedings of the Sixteenth Annual International ACM SIGIR Conference on Research and Development in Information Retrieval},
  entrydate=19930727,
  year=1993,
}