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Olsgaard, J.N.; Evans, E.J.: Improving keyword indexing (1981) 0.06

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Voorhees, E.M.: Implementing agglomerative hierarchic clustering algorithms for use in document retrieval (1986) 0.02

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Source: Information processing and management. 22(1986) no.6, S.465-476

Biebricher, N.; Fuhr, N.; Lustig, G.; Schwantner, M.; Knorz, G.: ¬The automatic indexing system AIR/PHYS : from research to application (1988) 0.01

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Date: 16. 8.1998 12:51:22

Hodges, P.R.: Keyword in title indexes : effectiveness of retrieval in computer searches (1983) 0.01

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Date: 14. 3.1996 13:22:21

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