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Niu, X.; Hemminger, B.M.; Lown, C.; Adams, S.; Brown, C.; Level, A.; McLure, M.; Powers, A.; Tennant, M.R.; Cataldo, T.: National study of information seeking behavior of academic researchers in the United States (2010)
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Next generation search engines : advanced models for information retrieval (2012)
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Pack, T.: Trends in digital document delivery (1996)
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