1. Barker, A.: The €60 billion Brexit bill. How to disentangle Britain from the EU budget. Centre for European Reform, January 2017
2. Bavishi, R., Barakat, S.: Procedural Issues related to the ICJ’s advisory jurisdiction. Briefing Paper, Legal Response Initiative (11 June 2012). http://legalresponseinitiative.org/wp-content/uploads/2013/09/BP41E-Briefing-Paper-The-ICJ-Advisory-Opinion-Procedure-11-June-2012.pdf
3. BOND: The impact of Brexit on UK and EU international development and humanitarian policy—Views from UK and European civil society (19 July 2017). https://www.bond.org.uk/sites/default/files/resource-documents/the_impact_of_brexit_on_uk_and_eu_international_development_policy_0.pdf
4. Church, C.H., Phinnemore, D.: Understanding the European Constitution. An introduction to the EU Constitutional Treaty. Routledge, London/New York (2006)
5. Craig, P.: Brexit, a drama. The Interregnum. Yearb. Eur. Law 36, 3–45 (2017). https://doi.org/10.1093/yel/yex005