Oxford Bibliographies Online - International Law (University of Melbourne staff and students access only) provides authoritative encyclopedic entries and annotated bibliographies on a range of topics such as General Customary Law and General Principles of Law.
The Max Planck Encyclopedia of Public International Law (University of Melbourne staff and students access only) contains comprehensive and authoritative overviews of all aspects of international law. Entries are arranged alphabetically by topic under broad subjects such as Sources of International Law, Customary International Law, General Principles of International Law, State Practice and the Law of Treaties.
The following resources provide article by article commentary on all 128 Articles of the Rome Statute. They include relevant case law and academic commentary.
The Commentary on the Law of the International Criminal Court includes the Rome Statute of the International Criminal Court - a regularly updated open-access database, edited by Dr Mark Klamberg.