1. The European Parliament and the Council of the European Union: Regulation (EU) 2016/679 of the European Parliament and of the Council of 27 April 2016 on the protection of natural persons with regard to the processing of personal data and on the free movement of such data, and repealing Directive 95/46/ec (General Data Protection Regulation). Off. J. Eur. Union 119
2. The European Parliament and the Council of the European Union: Regulation (EU) No 910/2014 of the European Parliament and of the Council of 23 July 2014 on electronic identification and trust services for electronic transactions in the internal market and repealing Directive 1999/93/ec (2014). http://eur-lex.europa.eu/legal-content/EN/TXT/?uri=uriserv:OJ.L_.2014.257.01.0073.01.ENG
3. Microsoft: U-Prove. Webpage of the project. Accessed 2017
4. IBM: Idemix. Webpage of the project. Accessed 2017
5. BSI: Technical guideline tr-03110 v2.21 - advanced security mechanisms for machine readable travel documents and eidas token (2016). https://www.bsi.bund.de/EN/Publications/TechnicalGuidelines/TR03110/BSITR03110.html