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Su, L.T.; Chen, H.L.: Evaluation of Web search engines by undergraduate students (1999)
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Spink, A.; Jansen, B.J.; Pedersen , J.: Searching for people on Web search engines (2004)
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Van der Walt, M.: South African search engines, directories and portals : a survey and evaluation (2000)
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Battelle, J.: ¬The search : how Google and its rivals rewrote the rules of business and transformed our culture (2005)
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Webber, S.: Search engines and news services : developments on the Internet (1998)
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