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Garfield, E.; Sher, I.H.: KeyWords Plus: algorithmic derivative indexing (1993)
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Garfield, E.; Sager, N.: Mechanical indexing, structural linguistics and information retrieval (1993)
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Garfield, E.: KeyWords Plus takes you beyond title words (1990)
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Garfield, E.: KeyWords Plus : ISI's breakthrough retrieval method (1990)
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Garfield, E.: ¬The relationship between mechanical indexing, structural linguistics and information retrieval (1992)
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