Marxsen, Christian Max Planck Institute for Comparative Public Law and International Law, Max Planck Society;
https://law.mpg.de/news/international-law-expert-christian-marxsen-answers-your-questions-on-the-war-in-ukraine/ (全文テキスト（全般）)
Marxsen, C. (2022). International Law Expert Christian Marxsen Answers Your Questions on the War in Ukraine. Max Planck Law. Retrieved from https://law.mpg.de/news/international-law-expert-christian-marxsen-answers-your-questions-on-the-war-in-ukraine/.
