Research bibliographies, research registers, reference databases, and citation indexes are compilations constructed for the explicit purpose of providing relatively comprehensive lists of published information related to a topic. They can be some of your most valuable literature searching sources.
Each of these databases has limitations, however. Some contain only published research; others, only unpublished research. As with searching the Internet, one searches the database by specifying keywords; any mismatch between the seeker and the indexer is likely to result in missed articles. There can be a long time lag before references appear in an electronic index, because after publication the work must be identified and catalogued into the reference database. Thus, physically browsing for newly appearing information is still advisable. Furthermore, despite their claims, none of the online databases access all relevant journals on a topic. Use multiple sources.
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