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Schoonbaert, D.; Rosenberg, V.: Personal Bibliographic Systems (PBS) (2009)
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Morato, J.; Llorens, J.; Genova, G.; Moreiro, J.A.: Experiments in discourse analysis impact on information classification and retrieval algorithms (2003)
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Hunter, E.J.: Classification - made simple : an introduction to knowledge organisation and information retrieval (2009)
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Williamson, N.J.: Education for positions in the subject control of information (1987)
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