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Kim, J.-H.; Choi, K.-S.: Patent document categorization based on semantic structural information (2007)
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Lawson, M.: Automatic extraction of citations from the text of English-language patents : an example of template mining (1996)
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Kang, I.-S.; Na, S.-H.; Kim, J.; Lee, J.-H.: Cluster-based patent retrieval (2007)
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Lai, K.-K.; Wu, S.-J.: Using the patent co-citation approach to establish a new patent classification system (2005)
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