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Vaughan, L.; Thelwall, M.: Search engine coverage bias : evidence and possible causes (2004)
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Thelwall, M.; Vaughan, L.: New versions of PageRank employing alternative Web document models (2004)
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Thelwall, M.; Binns, R.; Harries, G.; Page-Kennedy, T.; Price, L.; Wilkinson, D.: Custom interfaces for advanced queries in search engines (2001)
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