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Addison, E.R.; Wilson, H.D.; Feder, J.: ¬The impact of plain English searching on end users (1993)
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Wiggins, R.; Matthews, J.A.: Plateaus, peaks, and promises : the Infonortics '98 search engines conference (1998)
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Next generation search engines : advanced models for information retrieval (2012)
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Berry, M.W.; Browne, M.: Understanding search engines : mathematical modeling and text retrieval (2005)
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Chu, H.; Rosenthal, M.: Search engines for the World Wide Web : a comparative study and evaluation methodology (1996)
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