title: efficient and effective metasearch for text databases incorporating linkages among documents c yu , w meng , w wu , k liu 2001. authors: nan. venue: sigmod conference. year: nan
title: e-cient and effective metasearch for a large number of text databases. authors: c yu , w meng , kl liu , w wu , n rishe. venue: proc . acm cikm ,. year: nan