1. Carrera S. and Luk N.Ch., Love thy neighbour? Coronavirus politics and their impact on EU freedoms and rule of law in the Schengen Area. CEPS. No. 2020–04, April 2020. URL: https://www.ceps.eu/cepspublications/love-thy-neighbour/.
2. De Somer M., Schengen isn’t dead – yet. The real test will be dismantling border controls again. 03/04/2020. URL: https://www.euronews.com/2020/04/03/schengen-isn-t-dead-yet-the-real-test-is-still-to-come-view.
3. Hailbronner K, Thym D., EU Immigration and Asylum Law. Commentary, 2th edition (C.H. Beck/Hart/Nomos, 2016; EU immigration and asylum law: text and Commentary / ed. by Steve Peers and Nicola Rogers. Leiden: Martinus Nijhoff, 2006.
4. Hruschka C., The pandemic kills also the European solidarity. URL: http://eumigrationlawblog.eu/the-pandemic-kills-also-the-european-solidarity/
5. Pimor A., Solidarity was a founding principle of European unity – it must remain so. URL: http://theconversation.com/solidarity-was-a-founding-principle-of-european-unity-it-must-remain-so-74580.