Pertti Vakkari

Saila Huuskonen, Pertti Vakkari: "I Did It My Way": Social workers as secondary designers of a client information system. Inf. Process. Manage. 49(1): 380-391 (2013)

Pertti Vakkari, Saila Huuskonen: Search effort degrades search output but improves task outcome. JASIST 63(4): 657-670 (2012)

Suvi Oksanen, Pertti Vakkari: Emphasis on examining results in fiction searches contributes to finding good novels. JCDL 2012: 199-202

Pertti Vakkari: Comparing Google to a digital reference service for answering factual and topical requests by keyword and question queries. Online Information Review 35(6): 928-941 (2011)

Saila Huuskonen, Pertti Vakkari: Client's Temporal Trajectory in Child Protection: Piecing Information Together in a Client Information System. INTERACT (4) 2011: 152-169

Piritta Numminen, Pertti Vakkari: Question types in public libraries' digital reference service in Finland: Comparing 1999 and 2006. JASIST 60(6): 1249-1257 (2009)

Tuula Poikonen, Pertti Vakkari: Lay persons' and professionals' nutrition-related vocabularies and their matching to a general and a specific thesaurus. J. Information Science 35(2): 232-243 (2009)

Pertti Vakkari, Mari Taneli: Comparing Google to Ask-a-Librarian Service for Answering Factual and Topical Questions. ECDL 2009: 352-363

Pertti Vakkari: Perceived influence of the use of electronic information resources on scholarly work and publication productivity. JASIST 59(4): 602-612 (2008)

Sanna Talja, Pertti Vakkari, Jenny Fry, Paul Wouters: Impact of research cultures on the use of digital library resources. JASIST 58(11): 1674-1685 (2007)

Pertti Vakkari, Sanna Talja: Searching for electronic journal articles to support academic tasks. A case study of the use of the Finnish National Electronic Library (FinELib). Inf. Res. 12(1) (2006)

Saila Huuskonen, Pertti Vakkari: Situational relevance and task outcome. IIiX 2006: 15-19

Sami Serola, Pertti Vakkari: The anticipated and assessed contribution of information types in references retrieved for preparing a research proposal. JASIST 56(4): 373-381 (2005)

Pertti Vakkari, Sanna Talja: The Influence of the Scatter of Literature on the Use of Electronic Resources Across Disciplines: A Case Study of FinELib. ECDL 2005: 207-217

Sanna Törmä, Pertti Vakkari: Discipline, availability of electronic resources and the use of Finnish National Electronic Library - FinELib. Inf. Res. 10(1) (2004)

Pertti Vakkari, Eero Sormunen: The influence of relevance levels on the effectiveness of interactive information retrieval. JASIST 55(11): 963-969 (2004)

Anne Sihvonen, Pertti Vakkari: Subject Knowledge, Thesaurus-assisted Query Expansion and Search Success. RIAO 2004: 393-404

Pertti Vakkari: Task-based information searching. ARIST 37(1): 413-464 (2003)

Pertti Vakkari, Mikko Pennanen, Sami Serola: Changes of search terms and tactics while writing a research proposal: A longitudinal case study. Inf. Process. Manage. 39(3): 445-463 (2003)

Mikko Pennanen, Pertti Vakkari: Students' conceptual structure, search process, and outcome while preparing a research proposal: A longitudinal case study. JASIST 54(8): 759-770 (2003)

Pertti Vakkari: Subject Knowledge, Source of Terms, and Term Selection in Query Expansion: An Analytical Study. ECIR 2002: 110-123

Harry Bruce, Raya Fidel, Peter Ingwersen, Pertti Vakkari (Eds.): Emerging Frameworks and Methods: Proceedings of the Fourth International Conference on Conceptions of Library and Information Science (CoLIS 4). Libraries Unlimited 2002, isbn 1591580161

Pertti Vakkari: Changes in Search Tactics and Relevance Judgements when Preparing a Research Proposal A Summary of the Findings of a Longitudinal Study. Inf. Retr. 4(3-4): 295-310 (2001)

Pertti Vakkari: Cognition and changes of search terms and tactics during task performance: A longitudinal case study. RIAO 2000: 894-907

Pertti Vakkari: Relevance and contributing information types of searched documents in task performance. SIGIR 2000: 2-9

Carol Collier Kuhlthau, Pertti Vakkari: Editorial: Information seeking in context (ISIC). Inf. Process. Manage. 35(6): 723-725 (1999)

Pertti Vakkari: Task complexity, problem structure and information actions - Integrating studies on information seeking and retrieval. Inf. Process. Manage. 35(6): 819-837 (1999)

Tatjana Aparac, Tefko Saracevic, Peter Ingwersen, Pertti Vakkari (Eds.): Digital Libraries: Interdisciplinary Concepts, Challenges and Opportunities, CoLIS3 Proceedings, Dubrovnik, Croatia, 23-26 May 1999. Benja Publishing, Lokve, Croatia 1999

Pertti Vakkari: Trends in ... a Critical Review: Growth of Theories on Information Seeking: An Analysis of Growth of a Theoretical Research Program on the Relation Between Task Complexity and Information Seeking. Inf. Process. Manage. 34(2-3): 361-382 (1998)

Kalervo Järvelin, Pertti Vakkari: The Evolution of Library and Information Science 1965-1985: A Content Analysis of Journal Articles. Inf. Process. Manage. 29(1): 129-144 (1993)