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Feldman, S.: Web search services in 1998 : trends and challenges (1998)
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Kennedy, S.D.: Dilemmas abound with Internet ads (1996)
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Mukherjea, S.; Hirata, K.; Hara, Y.: Towards a multimedia World-Wide Web information retrieval engine (1997)
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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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Cree, J.S.; LeBruin, R.: ¬The search for the best engine (1998)
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