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Veenema, F.: To index or not to index (1996)
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Booth, A.: How consistent is MEDLINE indexing? (1990)
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Krovetz, R.; Croft, W.B.: Lexical ambiguity and information retrieval (1992)
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Harter, S.P.; Cheng, Y.-R.: Colinked descriptors : improving vocabulary selection for end-user searching (1996)
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Burgin, R.: ¬The effect of indexing exhaustivity on retrieval performance (1991)
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Braam, R.R.; Bruil, J.: Quality of indexing information : authors' views on indexing of their articles in chemical abstracts online CA-file (1992)
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Rowley, J.: ¬The controlled versus natural indexing languages debate revisited : a perspective on information retrieval practice and research (1994)
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Ellis, D.; Furner, J.; Willett, P.: On the creation of hypertext links in full-text documents : measurement of retrieval effectiveness (1996)
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