1. Case 152/73 Giovanni Maria Sotgiu v. Deutsche Bundespost, 1974 E.C.R. 153.
2. Case 75/63 Hoekstra v. Bestuur der Bedrijfsvereniging voor Detailhandel en Ambachten, 1964 E.C.R. 177.
3. In the Gauweiler order for reference, the German Constitutional Court pointed out the tensions between the conception of national identity under the Article 4(2) TEU and the broader protection for national constitutional identity under the German constitution. For an illuminating analysis, see Claes Monica & Reestman Jan-Herman , The Protection of National Constitutional Identity and the Limits of European Integration at the Occasion of the Gauweiler Case, 16 German L.J. 917, 938-41 (2015).
4. Case C-244/06, Dynamic Medien Vertriebs GmbH v. Avides Media AG, 2008 E.C.R. I-00505.
5. Case C-391/09, Malgozata Runevič-Vardyn and Lukasz Pawel Wardyn v. Vilniaus miesto savivaldybes administracija and Others, 2011 E.C.R. I-3787.