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Brenner, E.: Search engine conference looks to the future (1998)
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Search Engines and Beyond : Developing efficient knowledge management systems, April 19-20 1999, Boston, Mass (1999)
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Feldman, S.: Web search services in 1998 : trends and challenges (1998)
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Van der Walt, M.: South African search engines, directories and portals : a survey and evaluation (2000)
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