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Drabenstott, K.M.: Web search strategies (2000)
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King, S.V.: ELNET: the electronic library database system (1992)
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Hancock-Beaulieu, M.; Walker, S.: ¬An evaluation of automatic query expansion in an online library catalogue (1992)
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Poynder, R.: Web research engines? (1996)
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Kirriemuir, J.; Brickley, D.; Welsh, S.; Knight, J.; Hamilton, M.: Cross-searching subject gateways : the query routing and forward knowledge approach (1998)
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