1. Bibliographic retrieval systems;Siegel,1990
2. Information retrieval in medicine: State of the art;Hersh;MD Comput,1990
3. Indexing consistency in MEDLINE;Funk;Bull Med Lib Assoc,1983
4. An end-user search service in an academic health sciences library;Slingluff;Medical References Service Quarterly,1985
5. MEDLARS Indexing Manual, Parts I and II;Charen,1982