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Luhn, H.P.: Keyword-in-context index for technical literature (1960) 0.07

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Luhn, H.P.: ¬A statistical approach to the mechanical encoding and searching of literary information (1957) 0.07

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Luhn, H.P.: Keyword-in-context index for technical literature : KWIC index (1959) 0.05

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Luhn, H.P.: ¬The automatic derivation of information retrieval encodements from machine-readable texts (1961) 0.04

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Luhn, H.P.: Keyword-in-context index for technical literature (1985) 0.01

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