1. Amnesty International. (2016, April 22). EU Leaders Must Not Close Their Eyes to Human Rights Abuses Against Refugees. Press Release. https://www.amnesty.org/en/latest/news/2016/04/eu-turkey-refugees-merkel-tusk-timmermans/ . Accessed 4 April 2019.
2. Avramopoulos, D. (2018, December 18). Time to Build a Future Proof Migration and Asylum Policy (Policy Paper 497). Foundation Robert Schuman. https://www.robert-schuman.eu/en/european-issues/0497-it-is-time-to-build-a-modern-european-immigration-and-asylum-policy . Accessed 11 November 2019.
3. Burlyuk, O., & Noutcheva, G. (2019). Unintended Consequences of EU External Action. The International Spectator, 54(1), 1–15. https://doi.org/10.1080/03932729.2019.1558522 . Accessed 26 July 2019.
4. Carrera, S., Den Hertog, L., & Stefan, M. (2017). It Wasn’t Me! The Luxembourg Court Orders on the EU-Turkey Refugee Deal. CEPS, Policy Insights, n°2017–15/April 2017. https://www.ceps.eu/ceps-publications/it-wasnt-me-luxembourg-court-orders-eu-turkey-refugee-deal/ . Accessed 3 December 2019.
5. Ceccorulli, M. (2019). Back to Schengen: The Collective Securitisation of the EU Free-Border Area. West European Politics, 42(2), 302–322. https://doi.org/10.1080/01402382.2018.1510196 . Accessed 22 November 2019.