The End of Zero-hit Queries: Query Previews for NASA's Global Change Master Directory.

Stephan Greene Egemen Tanin Catherine Plaisant Ben Shneiderman Lola Olsen Gene Major Steve Johns The End of Zero-hit Queries: Query Previews for NASA's Global Change Master Directory. 79-90 1999 2 Int. J. on Digital Libraries 2-3 http://link.springer.de/link/service/journals/00799/bibs/9002002/90020079.htm db/journals/jodl/jodl2.html#GreeneTPSOMJ99