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Nicholls, P.T.: Empirical validation of Lotka's law (1986)
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- Information processing and management. 22(1986), S.417-419
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Fiala, J.: Information flood : fiction and reality (1987)
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- Thermochimica acta. 110(1987), S.11-22
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Vasiljev, A.: ¬The law of requisite variety as applied to subject indexing and retrieval (1989)
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- Klassifikation und Ordnung. Tagungsband 12. Jahrestagung der Gesellschaft für Klassifikation, Darmstadt 17.-19.3.1988. Hrsg.: R. Wille