Real life, real users, and real needs: a study and analysis of user queries on the web.

Bernard J. Jansen Amanda Spink Tefko Saracevic Real life, real users, and real needs: a study and analysis of user queries on the web. 207-227 2000 36 Inf. Process. Manage. 2 db/journals/ipm/ipm36.html#JansenSS00