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Swanson, D.R.: Requirements study for future catalogs (1972)
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Swanson, D.R.: Some unexplained aspects of the Cranfield tests of indexing performance factors (1971)
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Bookstein, A.; Swanson, D.R.: Probabilistic models for automatic indexing (1974)
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Swanson, D.R.: Information retrieval as a trial-and-error process (1977)
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Bookstein, A.; Swanson, D.R.: ¬A decision theoretic foundation for indexing (1975)
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