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  • × author_ss:"Popping, R."
  1. Popping, R.; Roberts, C.W.: Network approaches in text analysis (1997) 0.09 
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    Source
    Classification and knowledge organization: Proceedings of the 20th Annual Conference of the Gesellschaft für Klassifikation e.V., University of Freiburg, March 6-8, 1996. Eds.: R. Klar u. O. Opitz
  2. Roberts, C.W.; Popping, R.: Computer-supported content analysis : some recent developments (1993) 0.01 
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