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  1. Silvester, J.P.; Klingbiel, P.H.: ¬An operational system for subject switching between controlled vocabularies (1993) 10.09 
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  2. Silvester, J.P.; Genuardi, M.T.; Klingbiel, P.H.: Machine-aided indexing at NASA (1994) 10.09 
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  3. Silvester, J.P.; Genuardi, M.T.: Machine-aided indexing from the analysis of natural language text (1994) 10.09 
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  4. Silvester, J.P.: Computer supported indexing : a history and evaluation of NASA's MAI system (1998) 10.09 
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