Mikhail Koulikov (Reference/Research Librarian, New York Law Institute) has published Indexing and Full-Text Coverage of Law Review Articles in Nonlegal Databases: An Initial Study, 102 Law Lib. J. 39 (2010). Here is the abstract:

Mr. Koulikov examines the level of coverage that articles originally published in law reviews receive in eight major general academic databases. His findings are very similar to those of other discipline-specific database coverage studies, and reveal that coverage varies widely by database, regardless of the database’s claim to cover legal periodicals. This has particular implications for the level of engagement that nonlegal scholars have with the literature of the legal academia, and for the potential for meaningful interaction between legal scholars and their peers in other academic fields.

(Hat Tip: Blackbook Legal Blog.)