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  • × author_ss:"Nikolov, T."
  • × author_ss:"Angelova, G."
  • × type_ss:"a"
  • × language_ss:"e"
  1. Angelova, G.; Nenkova, A.; Boycheva, S.; Nikolov, T.: Conceptual graphs as a knowledge representation core in a complex language learning environment : a challenge for the conceptual graph approach (2000) 1.00
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