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Ojala, M.: Research into full-text retrieval (1990)
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Ojala, M.: Views on end-user searching (1986)
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Ojala, M.: Decisions, decisions, RANK decisions (1994)
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Ojala, M.: Who's hosting this search? (1995)
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Ojala, M.: Filtered information and intelligent agent software (1995)
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Northern Light adds precision search enhancements (1998)
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Birmingham, J.: Internet search engines (1996)
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Edwards, D.H.: Evaluating Internet search tools : a librarian's guide (1997)
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Hock, R.E.: How to do field searching in Web search engines : a field trip (1998)
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Overton, R.: Search engines get faster and faster, but not always better (1996)
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