1. Barnhoorn LANM, Wellens KC (eds) (1995) Diversity in Secondary Rules and the Unity of International Law. T.M.C. Asser Press, The Hague.
2. Cannizzaro E (2013) Beyond the Either/Or: Dual Attribution to the European Union and to the Member State for Breach of the ECHR. In: Evans MD, Koutrakos P (eds) The International Responsibility of the European Union. Hart Publishing, Oxford/Portland, OR, pp. 295–312.
3. Castellarin E (2017) La participation de l’Union européenne aux institutions économiques internationales. Editions Pedone, Paris.
4. Contartese C (2017) The Autonomy of the EU Legal Order in the ECJ’s External Relations Case Law: From the “Essential” to the “Specific Characteristics” of the Union and Back Again. Common Market Law Review 54:1627–1671.
5. Cremona M (2010) Disconnection clauses in EU law and practice. In: Koutrakos P, Hillion C (eds) Mixed Agreements Revisited: The EU and its Member States in the World. Hart Publishing, Oxford, pp. 160–186.