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Järvelin, K.; Vakkari, P.: ¬The evolution of library and information science 1965-1985 : a content analysis of journal titles (1993)
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Vakkari, P.: Information seeking in context : a challenging metatheory (1997)
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Vakkari, P.: Task complexity, information types, search strategies and relevance : integrating studies on information retrieval and seeking (1999)
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Pennanen, M.; Vakkari, P.: Students' conceptual structure, search process, and outcome while preparing a research proposal : a longitudinal case study (2003)
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Vakkari, P.; Sormunen, E.: ¬The influence of relevance levels an the effectiveness of interactive information retrieval (2004)
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Serola, S.; Vakkari, P.: ¬The anticipated and assessed contribution of information types in references retrieved for preparing a research proposal (2005)
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Vakkari, P.: Task-based information searching (2002)
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Sihvonen, A.; Vakkari, P.: Subject knowledge improves interactive query expansion assisted by a thesaurus (2004)
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Vakkari, P.; Jones, S.; MacFarlane, A.; Sormunen, E.: Query exhaustivity, relevance feedback and search success in automatic and interactive query expansion (2004)
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Vakkari, P.: ¬A theory of the task-based information retrieval process : a summary and generalisation of a longitudinal study (2001)
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Vakkari, P.; Kuokkanen, M.: Theory growth in information science : applications of the theory of science to a theory of information seeking (1997)
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Vakkari, P.; Järvelin, K.: Explanation in information seeking and retrieval (2005)
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Talja, S.; Vakkari, P.; Fry, J.; Wouters, P.: Impact of research cultures on the use of digital library resources (2007)
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Vakkari, P.; Pennanen, M.; Serola, S.: Changes of search terms and tactics while writing a research proposal : a longitudinal case study (2003)
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Vakkari, P.: Perceived influence of the use of electronic information resources on scholarly work and publication productivity (2008)
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Eerola, J.; Vakkari, P.: How a general and a specific thesaurus cover expressions in patients' questions and physicians' answers (2008)
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Huuskonen, S.; Vakkari, P.: Students' search process and outcome in Medline in writing an essay for a class on evidence-based medicine (2008)
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Numminen, P.; Vakkari, P.: Question types in public libraries' digital reference service in Finland : comparing 1999 and 2006 (2009)
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Vakkari, P.: How specific thesauri and a general thesaurus cover lay persons' vocabularies concerning health, nutrition and social services
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Vakkari, P.; Huuskonen, S.: Search effort degrades search output but improves task outcome (2012)
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