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Munkelt, J.; Schaer, P.: Towards an IR test collection for the German National Library (2018)
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Schaer, P.; Mayr, P.; Sünkler, S.; Lewandowski, D.: How relevant is the long tail? : a relevance assessment study on million short (2016)
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Hider, P.: ¬The search value added by professional indexing to a bibliographic database (2017)
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