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  • × author_ss:"Christensen, F.H."
  • × year_i:[1990 TO 2000}
  1. Christensen, F.H.; Ingwersen, P.: Online citation analysis : a methodological approach (1996) 4.45 
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  2. Christensen, F.H.: Publikations- og citationsanalyser (1997) 4.45 
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