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Griffiths, A.; Robinson, L.A.; Willett, P.: Hierarchic agglomerative clustering methods for automatic document classification (1984)
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- Journal of documentation. 40(1984) no.3, S.175-205
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Willett, P.: Recent trends in hierarchic document clustering : a critical review (1988)
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- Information processing and management. 24(1988) no.5, S.577-597
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Griffiths, A.; Luckhurst, H.C.; Willett, P.: Using interdocument similarity information in document retrieval systems (1986)
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- Journal of the American Society for Information Science. 37(1986) no.1, S.3-11
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Perry, R.; Willett, P.: ¬A revies of the use of inverted files for best match searching in information retrieval systems (1983)
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- Journal of information science. 6(1983), S.59-66
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Wade, S.J.; Willett, P.; Bawden, D.: SIBRIS : the Sandwich Interactive Browsing and Ranking Information System (1989)
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- Journal of information science. 15(1989) no.4/5, S.249-260