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Pejtersen, A.M.: Implications of users' value perception for the design of a bibliographic retrieval system (1986)
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- Empirical foundation of information and software science. Ed.: J.C. Agarwal u. P. Zunde
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Tufte, E.R.: ¬The visual display of quantitative information (1983)
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Rolling, L.: ¬The role of graphic display of concept relationships in indexing and retrieval vocabularies (1985)
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