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Back, J.: ¬An evaluation of relevancy ranking techniques used by Internet search engines (2000)
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Sparck Jones, K.: ¬A statistical interpretation of term specifity and its application in retrieval (1972)
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Davis, C.H.: Beyond Boole : the next logical step (1995)
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Ziegler, B.: ESS: ein schneller Algorithmus zur Mustersuche in Zeichenfolgen (1996)
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White, H. D.: Co-cited author retrieval and relevance theory : examples from the humanities (2015)
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