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  1. Yu, W.; Gong, Y.: Document clustering by concept factorization (2004) 10.60 
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    Author
    Yu, W.
  2. Zeng, Q.; Yu, M.; Yu, W.; Xiong, J.; Shi, Y.; Jiang, M.: Faceted hierarchy : a new graph type to organize scientific concepts and a construction method (2019) 10.60 
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