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Kiren, T.: ¬A clustering based indexing technique of modularized ontologies for information retrieval (2017)
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Thenmalar, S.; Geetha, T.V.: Enhanced ontology-based indexing and searching (2014)
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Bhogal, J.; Macfarlane, A.; Smith, P.: ¬A review of ontology based query expansion (2007)
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Stojanovic, N.: Ontology-based Information Retrieval : methods and tools for cooperative query answering (2005)
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