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Robertson, S.E.: ¬The parametric description of retrieval tests : Part I: The basic parameters (1969)
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Robertson, S.E.: ¬The parametric description of retrieval tests : Part II: Overall measures (1969)
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Blagden, J.F.: How much noise in a role-free and link-free co-ordinate indexing system? (1966)
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- Source
- Journal of documentation. 22(1966), S.203-209