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Koskenniemi, Martti (September 2002). "Fragmentation of International Law? Postmodern Anxieties". Leiden Journal of International Law. 15 (3): 553–579. doi:10.1017/S0922156502000262. S2CID146783448.
Yun, Seira (2014). "Breaking Imaginary Barriers: Obligations of Armed Non-State Actors Under General Human Rights Law – The Case of the Optional Protocol to the Convention on the Rights of the Child". Journal of International Humanitarian Legal Studies. 5 (1–2): 213–257. doi:10.1163/18781527-00501008. SSRN2556825.