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Choi, B.; Peng, X.: Dynamic and hierarchical classification of Web pages (2004)
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Buente, W.; Robbin, A.: Trends in Internet information behavior, 2000-2004 (2008)
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Chang, R.: ¬The development of indexing technology (1993)
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Chang, R.: Keyword searching and indexing (1993)
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Information sources in grey literature (1998)
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