FRIEDERY, Réka. Hardening borders during the pandemic in the European Union: The Shape of the Schengen Borders Code and the EU Digital COVID Certificate. Quarterly on Refugee Problems - AWR Bulletin, Würzburg, Germany, v. 61, n. 1, p. 71–84, 2022. DOI: 10.57947/qrp.v61i1.29. Disponível em: https://ejournals.bibliothek.thws.de/qrp/article/view/29. Acesso em: 28 apr. 2024.