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Smeaton, A.F.: Progress in the application of natural language processing to information retrieval tasks (1992)
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Bakewell, K.G.B.; Rowland, G.: Indexing and abstracting (1993)
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Su, H.: Automatic abstracting (1996)
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Ward, M.L.: ¬The future of the human indexer (1996)
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Collier, H.: Cool, cool searching (1996)
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