Gordon W. Paynter Ian H. Witten A Combined Phrase and Thesaurus Browser for Large Document Collections. 25-36 2001 conf/ercimdl/2001 ECDL http://link.springer.de/link/service/series/0558/bibs/2163/21630025.htm db/conf/ercimdl/ecdl2001.html#PaynterW01