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Vakkari, P.; Huuskonen, S.: Search effort degrades search output but improves task outcome (2012)
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Foster, A.; Ford, N.: Serendipity and information seeking : an empirical study (2003)
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Keen, E.M.: Some aspects of proximity searching in text retrieval systems (1992)
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Wildemuth, B.M.; Jacob, E.K.; Fullington, A.;; Bliek, R. de; Friedman, C.P.: ¬A detailed analysis of end-user search behaviours (1991)
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