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4. Langford M, Vandenhole W, Scheinin M, Van Genugten W: Global Justice, State Duties. The Extraterritorial Scope of Economic, Social and Cultural Rights in International Law. 2013, Cambridge: Cambridge University Press
5. Group of experts in international law and human rights: Maastricht Principles on Extraterritorial Obligations of States in the area of Economic, Social and Cultural Rights. 2011,
http://www.fian.org/en/library/publication/detail/maastricht_principles_on_extraterritorial_obligations_of_states/
,