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Cleverdon, C.W.: Evaluation tests of information retrieval systems (1970)
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Cleverdon, C.W.: Aslib Cranfield research project : report on the testing and analysis of an investigation into the comparative efficiency of indexing systems (1962)
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Cleverdon, C.W.; Mills, J.; Keen, M.: Factors determining the performance of indexing systems : ASLIB Cranfield research project (1966)
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Cleverdon, C.W.: ASLIB Cranfield Research Project : Report on the first stage of an investigation into the comparative efficiency of indexing systems (1960)
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Cleverdon, C.W.: ¬The Cranfield tests on index language devices (1967)
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