Max Planck Encyclopedia of Public International Law
The Max Planck Encyclopedia of Public International Law (MPEPIL) is an online encyclopedia dealing with international law. It was published under the auspices of Professor Rüdiger Wolfrum, Director of the Max Planck Institute for Comparative Public Law and International Law until his successor Anne Peters became general editor in 2021.
Source: Wikipedia — Max Planck Encyclopedia of Public International Law (CC BY-SA 4.0)