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Craven, T.C.: Changing technologies: impact on information: the case of string indexing (1985)
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Craven, T.C.: NEPHIS: a nested phrase indexing system (1977)
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Kascus, M.A.: Indexing, in theory and practice (1996)
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Kanjilal, A.: Permuted keyword index using CDS/ISIS : a tutorial (1992)
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Wool, G.: Filing and precoordination : how subject headings are displayed in online catalogs and why it matters (2000)
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