Max Planck Encyclopedia of Public International Law online
https://opil.ouplaw.com/home/EPIL
Search by subjects:
"Law of the Sea"
"UNCLOS"
The Oxford Handbook of the Law of the Sea https://www.szlib.org.cn/opac/searchDetail?tablename=bibliosm&recordid=3262070&library=all
Yearbook International Tribunal for the Law of the Sea (2020)
https://www.iresearchbook.cn/f/ebook/detail?id=04e8cb5a5b7b49a082de90c15a45b925