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author_ss:"Tzitzikas, Y."
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theme_ss:"Wissensrepräsentation"
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year_i:[2000 TO 2010}
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language_ss:"e"
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Tzitzikas, Y.; Spyratos, N.; Constantopoulos, P.; Analyti, A.: Extended faceted ontologies (2002)
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Tzitzikas, Y.: Collaborative ontology-based information indexing and retrieval (2002)
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