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- Vgl.: http%3A%2F%2Fdelab.csd.auth.gr%2F~dimitris%2Fcourses%2Fir_spring06%2Fpage_rank_computing%2Fp527-li.pdf. Vgl. auch: http://www2002.org/CDROM/refereed/643/.
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Fang, X.; Salvendy, G.: Keyword comparison : a user-centered feature for improving Web search tools (2000)
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ap: Suchmaschinen in neuem Gewand : Metaspinner kennt 600 Millionen Seiten (1999)
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