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Cuadra, C.A.; Katter, R.V.: Experimental studies of relevance judgements: final report : Vol.2: description of individual studies (1967)
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Robertson, S.E.; Thompson, C.L.: ¬An operational evaluation of weighting, ranking and relevance feedback via a front-end system (1987)
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Hancock-Beaulieu, M.; McKenzie, L.; Irving, A.: Evaluative protocols for searching behaviour in online library catalogues (1991)
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Aitchison, T.M.: Comparative evaluation of index languages : Part I, Design. Part II, Results (1969)
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Armstrong, C.J.; Medawar, K.: Investigation into the quality of databases in general use in the UK (1996)
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