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  • × author_ss:"Walker, S."
  • × theme_ss:"Semantisches Umfeld in Indexierung u. Retrieval"
  1. Walker, S.; DeVere, R.: Improving subject retrieval in online catalogues : T.2: Relevance feedback and query expansion (1990) 0.00 
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  2. Walker, S.: Subject access in online catalogues (1991) 0.00 
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  3. Hancock-Beaulieu, M.; Walker, S.: ¬An evaluation of automatic query expansion in an online library catalogue (1992) 0.00 
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