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Maron, M.E.; Kuhns, I.L.: On relevance, probabilistic indexing and information retrieval (1960)
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- Footnote
- Wiederabgedruckt in: Readings in information retrieval. Ed.: K. Sparck Jones u. P. Willett. San Francisco: Morgan Kaufmann 1997. S.39-46.
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Iker, H.P.: Solution of Boolean equations through the use of term weights to the base two (1967)
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Goffman, W.: ¬A searching procedure for information retrieval (1964)
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