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Chan, L.M.: Social bookmarking and subject indexing (2011)
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Rafferty, P.: Tagging (2018)
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Peters, I.: Folksonomies, social tagging and information retrieval (2011)
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Solskinnsbakk, G.; Gulla, J.A.; Haderlein, V.; Myrseth, P.; Cerrato, O.: Quality of hierarchies in ontologies and folksonomies (2012)
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