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Dunning, A.: Do we still need search engines? (1999)
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Birmingham, J.: Internet search engines (1996)
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Bensman, S.J.: Eugene Garfield, Francis Narin, and PageRank : the theoretical bases of the Google search engine (2013)
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Boldi, P.; Santini, M.; Vigna, S.: PageRank as a function of the damping factor (2005)
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Baeza-Yates, R.; Boldi, P.; Castillo, C.: Generalizing PageRank : damping functions for linkbased ranking algorithms (2006)
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Spink, A.; Gunar, O.: E-Commerce Web queries : Excite and AskJeeves study (2001)
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Sullivan D.: ¬The major search engines (1998)
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Sullivan D.: How search engines rank web pages (1998)
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Binghampton University Libraries: Comparing search engines (1998)
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Sullivan D.: Search engines features chart (1998)
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