Can be searched through periodicals indexes on Westlaw, Lexis, library catalog, LegalTrac (accessible through A-Z Databases)
Index to Foreign Legal Periodicals (accessible via Hein Online)
Hein Online resources, e.g., International & Non-U.S. Law Journals - Journals on the subject of international law & journals published outside the U.S. (Hein is accessible through A-Z Databases)
Library catalog will identify print & digital resources at Univ. of Idaho Libraries & Summit member libraries (i.e., most academic libraries in the Pacific Northwest); if a resource is not at U of, I but at a Summit member library, sign in & select "Place Summit Request" to have it sent here for you to pick up at Circulation
WorldCat will identify resources at hundreds of libraries around the world; if you find one that is not available via U of I or Summit, place an Interlibrary Loan request)
Special Mention: Multinational Sources Compared
Accessible via Hein Online, Multinational Sources Compared: A Subject & Jurisdiction Index, directs researchers to sources that compare multiple jurisdictions on focused subjects.