Why Re-Establishing Border Controls in Europe Could Come at a High Cost | RAND
Leak: 'Temporary' internal Schengen border checks could last four years – EURACTIV.com
TOWARDS “SCHENGEN LIGHT” - DIIS POLICY BRIEF MARCH 2016
Germany Warns Schengen in Danger Following New Border Controls
Migrant crisis: EU seeks more controls for Schengen borders - BBC News
More Schengen Countries Prolong Temporary Internal Border Controls - SchengenVisaInfo.com
Are Schengen Border Controls the New Norm? | liberties.eu
EU leaders to call for revision of Schengen Border Code – POLITICO
Schengen: Controversial EU free movement deal explained - BBC News
Schengen area: Council recommends prolongation of internal border controls - World | ReliefWeb
The Future of Schengen – European Council on Foreign Relations
Map: Which Schengen Borders Are Closed to Passport-Free Travel in August 2017?
Schengen Area - Wikipedia
Temporary reintroduction of border control at internal borders. - Santaniello & Partners
Love thy neighbour?
Temporary border controls in the Schengen area | Epthinktank | European Parliament
Stjórnarráðið | Iceland Introduces Temporary Schengen Border Controls and 14-day Quarantine for International Arrivals
Border fences and internal border controls in Europe (March 2017) - World | ReliefWeb
A not-so-temporary reinstatement of internal border controls? - Leiden Law Blog
Border checks are undermining Schengen | The Economist
The impact of coronavirus on Schengen borders | Epthinktank | European Parliament
Border checks in EU challenge Schengen Agreement – DW – 11/12/2019
