Legal encyclopedia articles are useful tools for getting background information on a topic. They provide context for the rules governing the topic as well as citations to the important laws and regulations. The best of the bunch here is the Max Planck Encyclopedia of public international law.
A good way to start research is to obtain a bibliography compiled by an expert in the field. Bibliographies offer an oveview of relevant literature by listing selected books, articles, or documents on a particular topic.
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