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Souza, J.; Carvalho, A.; Cristo, M.; Moura, E.; Calado, P.; Chirita, P.-A.; Nejdl, W.: Using site-level connections to estimate link confidence (2012)
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Austin, D.: How Google finds your needle in the Web's haystack : as we'll see, the trick is to ask the web itself to rank the importance of pages... (2006)
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Lawrence, S.; Giles, C.L.: Inquirus, the NECI meta search engine (1998)
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Thelwall, M.; Vaughan, L.: New versions of PageRank employing alternative Web document models (2004)
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